Rolex Reference number Guide: The Go-to Resource List
All Rolex watches have two engravings on the metal of its case. These engravings are what are known as the reference number and the serial number. The serial number can be found on the 6 o’clock side of the case of the watch, but from 2010, Rolex started engraving the serial number of their watches on the rehaut instead, which is the inner metal ring below the crystal. During a period, though, some Rolex watches got the serial number engraved both on the case and on the rehaut, but on modern Rolex watches, the serial number is only engraved on the rehaut.
Then, we have the second engraving, which is what we’ll be focusing on in this article, and that is the Rolex reference number. The reference number is engraved on the 12 o’clock side of the case.
The reference number is engraved between the lugs of the watch, on the case
Now, the serial number and reference number of a Rolex watch aren’t engraved by accident, but instead, they actually have several important purposes.
The reference number of a Rolex watch describes more about what watch it is, which model, and what elements it is made up of.
The serial number, on the other hand, can tell you when the watch was manufactured, and also work as a unique identification number for your watch.
Of course, if you know nothing about Rolex reference numbers or serial numbers, the numbers won’t tell you anything. To most people, these numbers mean nothing, but they actually give quite a lot of information, and each digit represents a defining characteristic of the watch.
In the middle of the 1950s, Rolex reached 999,999 which caused them to start over at 100,000. During this transition time (transition years), Rolex also stamped the date of the watch on the inside of the casebook, and they did so by using Roman numbers for each quarter.
Since Rolex has used reference numbers for a long time, the way they are used and how long the number is has evolved over the years. The Rolex reference numbers can vary between 4 to 6 digits in length.
Now, what each of the numbers means, and what each digit position in the number tells us, we’ll go into detail further on, but let’s go over them quickly, to begin with.
The first two or three digits in the Rolex reference number gives you information about which model it is. This is a huge help since by only knowing the two or three first digits that each model is represented by, you can instantly tell which model is being spoken about from the Rolex reference number.
When we say ”the model”, it is the most defining characteristic of that particular model type, which includes its size and the type of movement used in the watch.
If the Rolex reference number is made up of five digits, the 4th digit will refer to the style of the bezel on that watch. Note that there are some exceptions to this.
The last number in the reference number tells you which material the watch is made from.
When it comes to metal, it may sound unnecessary since you can clearly see what material a watch is made of, however, that’s not always the case.
In fact, when Rolex uses things like a mixture of white gold and stainless steel, it can be mistaken to only be stainless steel, or when Rolex uses their Rolesium metal, which is a mixture of titanium and Stainless steel.
In especially these cases, it gets much easier to identify which materials a Rolex watch is actually made in, since the eye may be tricked sometimes.
Furthermore, the Rolex reference is also great for identifying whether or not the watch is original or if certain parts have been changed. By looking at the Rolex reference number, you can identify which elements the watch should have, and then inspect the watch to confirm that.
When talking about serial numbers, Rolex began using a letter as the first digit of their serial numbers in 1987 to signify the year of production for that specific watch.
The Rolex reference number can’t be used to identify which year your watch was made, and that’s when the serial number comes in handy.
Rolex reference numbers: more helpful information
Rolex reference numbers can actually be used to distinguish counterfeit Rolex watches in some cases. The fact is that many counterfeit Rolex doesn’t even have the reference number engraved, and if they do, they tend to have completely made-up imaginary numbers. If the case is that the counterfeit watch has the real reference number, you’ll still be able to tell a real from a fake by looking at the quality of the engraving. Fake watch engravings tend to have an acid-etched look while the real watches have a diamond engraving made to perfection.
On Rolex watches that were made before the 1980s, you’ll find a four-digit reference number, but on the flip side, on Rolex models released between the 1980s and 2000, you’ll find a 5 digit number.
The first two or three digits of the reference number can be used to identify the model of the watch, and we’ll present a list further on with the first numbers in the Rolex reference number and what model it alludes to.
The modern Rolex watches released from 2000 and onwards will have a 6-digit reference number with a number “1” prefacing the 5-digit reference number. The numeric preface may change as more models are released.
- The 5th digit refers to the bezel type
- The 6th digit refers to the bracelet type.
Now, you’re aware of the fact that Rolex reference numbers can give us quite a lot of information about the different Rolex models, but what exactly is it they tell us?
Well, each digit in the Rolex reference number actually refers to a particular element of the watch, and the different numbers tell us different things about the watch.
On traditional Rolex models, the first three digits in the reference number tell us what model the watch is.
These three digits can be used to determine the model of traditional Rolex models:
- 140 = Oyster Perpetual Air-King and Submariner
- 142 = Oyster Perpetual Chronometer 34mm and Explorer
- 152 = Oyster Perpetual Date – Mens 34 mm
- 162 = Oyster Perpetual Datejust Men’s 36mm
- 165 = Explorer II
- 166 = Submariner, SeaDweller, Yachtmaster 40mm
- 167 = GMT Master II
- 170 = Oyster Quartz Datejust
- 189 = Oyster Perpetual Special Edition
- 190 = Oyster Quartz Day-Date
- 1165 Cosmograph Daytona
- 1182 Oyster Perpetual Day-Date
- 1183 Oyster Perpetual Day-Date Serti (With Diamonds)
The modern Rolex models after 2004-2006 have an extra ”1” which is added to the beginning of the reference number which tells us that it is the modern version of an existing model. For example, while the older version no-date Submariner has the reference number 14060, the new ceramic no-date submariner has the reference number 114060, allowing us to differentiate the modern from the older model.
The sixth digit in the reference number, which is the last number of modern Rolex watches, is the digit that refers to the watch’s metal. For watches with a reference number with fewer digits than 6, the last digit in the reference number tells you what metal type it is made of.
The following numbers tell you that the different materials are used:
- 0 = Stainless Steel
- 1 = Stainless steel and Everose Gold (Everose Rolesor)
- 2 = Stainless steel and Platinum (Yachtmaster)
- 3 = Stainless Steel and 18k Yellow gold (Yellow Rolesor)
- 4 = Stainless Steel and 18k White gold (White Rolesor)
- 5 = Gold Shell (No Longer in use)
- 6 = Platinum
- 7 = 14k Yellow gold (No Longer Used)
- 8 = 18k Yellow gold
- 9 = 18k White gold
- BIC = Bi-Color 18k Yellow and White gold combo
- TRIDOR = 18k Yellow, White, and Rose gold
Bezel code in the Rolex reference number
The 5th digit in the Rolex reference number tells us what type of bezel the watch has.
- Engine Turned
- Pyramide -Not in use
- Special – Not currently in use
- Open -Not Currently in use
Rolex Submariner reference numbers
- 6204: First Submariner without crown guards and 37mm case.
- 6205: Early Submariner without crown guards and 37mm case.
- 6200: Early Submariner without crown guards and famous for its’ 3-6-9 “Explorer dial”.
- 6536: Early Submariner with bigger crown and 38mm case.
- 6536/1: Early Submariner with a small crown and known for its appearance in the first James Bond movie.
- 6538: Early Submariner that can be seen both with the 3-6-9 dial and an ordinary in its 38mm case.
- A/6538: Modded 6538 and the first MilSub made for Special Boat Squadron in 21 copies, was never sold on the civilian market.
- 5508: Early Submariner with no crown guards and 37mm case.
- 5510: Early Submariner with a 38mm case without crown guards.
- 5512: A new case with crown guards and 40mm, COSC-certified written text on the dial.
- 5513: The same as 5512 but not COSC-certified text on the dial.
- 5517: MilSub made for the British military known for its sword hands. Also known as 5513/17.
- 5514: The same as 5513 but moded with a gas escape valve for professional Comex divers.
- 1680: First Submariner with date function. Can be seen with Submariner text written in red and white.
- 16803: Two-Tone Submariner with blue and black dial and bezel.
- 16808: Yellow gold submariner.
- 16800: A transitional model of the Submariner. First dial with white gold index.
- 168000: Updated 16800.
- 16610: Finally fully updated Submariner from 1680. A case with Rehaut but most without.
- 16613: Two-Tone Submariner with blue and black dial and bezel. A case with Rehaut but most without.
- 16618: Solid yellow gold Submariner. A case with Rehaut but most without.
- 14060: No date and updated Submariner.
- 14060M: Updated submariner and case with Rehaut but most without.
- 16610LV: Green bezel and Submariners’ 50 years anniversary model.
- 116610LN: Ceramic bezel with a new case. Maxi hands and dial.
- 116610LV: Green ceramic bezel and a new case. Maxi hands and dial.
- 116613: Two-Tone ceramic Submariner with both black and blue dial and bezel. Maxi hands and dial.
- 116618LB: Solid yellow gold Submariner with blue and black dial and bezel. Maxi hands and dial. Maxi hands and dial.
- 116619LB: Solid white gold Submariner with blue dial and bezel.
Rolex GMT Master reference numbers
- 6542: First GMT Master with modified movement. Bakelite and steel bezel. Pepsi inserts. No crown guards
- 6542/8: Yellow gold GMT Master. No crown guards.
- 1675: Second GMT Master with both Pepsi and an all-black bezel. The first case with crown guards.
- 16753: Two-Tone GMT Master with rootbeer bezel.
- 16758: All yellow gold GMT Master.
- 16750: First GMT Master with quickset movement. Pepsi and black bezel.
- 16760: GMT Master is also known as “Fat Lady” for its’ bigger case. Coke insert ( black and red ).
- 16700: Black, Pepsi ( blue and red ), and Coke ( black and red ) insert.
- 16710: Black, Pepsi ( blue and red ), and Coke ( black and red ) insert. First GMT Master II.
- 16713: Two-Tone GMT Master II in both rootbeer and black insert.
- 116710LN: Updated GMT Master II with ceramic bezel, maxi dial, and hands. This reference had a black bezel.
- 116710BLNR: Updated GMT Master II with ceramic bezel, maxi dial, and hands with Batman ( blue and black ) ceramic bezel.
- 116713LN: Two-Tone GMT Master II with a black insert with ceramic bezel, maxi dial and hands.
- 116718LV: Solid gold GMT Master celebrating 50 years of the GMT Master with green bezel and dial.
- 116719BLRO: White gold GMT Master II with Pepsi ceramic bezel ( blue and red ).
- 126710BLRO: Brand new “Pepsi” model with Jubilee bracelet. Blue and red bezel.
- 126710BLNR: The updated version of the 116710blnr with the Jubilee bracelet and new movement.
- 126711CHNR: Also known as “root beer”. Gold and steel GMT, made in Everose gold and steel.
- 126715 CHNR: Full rose gold version of the “root beer”
Rolex Air King reference numbers
- 1400: Updated version with sapphire crystal and a new caliber 3000 movement.
- 4365: Made in the 1940s. The first Rolex Air-King measured 34 millimeters.
- 4925: The first Oyster watch to feature the iconic Air-King moniker on the dial.
- 5502: Acrylic crystal. 1530 automatic movement.
- 5520: Silver dial, automatic movement. Gold case.
- 6500: Oyster Perpetual and chronometer rated. This Rolex reference was never branded an Air-King.
- 14000M: Automatic movement, scratch-resistant sapphire crystal, waterproof screw-down crown. Case in 34mm.
- 14010M: Automatic 3130 movement, scratch-resistant sapphire crystal, waterproof screw-down crown
- 114234: Introduced in In 2007. The last model of the Air-king family (of the past generation since the model was revived in 2016). It features a white gold bezel and is the only Air-king with such element.
- 114210: 34mm case, Silver Luminous with Arabic hour markers at 3, 6, 9. Automatic movement, scratch-resistant sapphire crystal. Waterproof.
- 5700: Automatic movement, acrylic crystal, waterproof screw-down crown. Blue, linen, or silver dial.
- 5506: Automatic movement, acrylic crystal. Yellow gold plated.
- 5501: Automatic 1520 movement. Acrylic crystal, waterproof. Screw-down crown. Oyster case. Introduced in 1958.
- 5500: It is technically an Air-King, but Rolex also offered the ref. 5500 with an Explorer dial for about 10 years.
- 5504: Stainless steel. The 5504 case was used as both the Air-King as well as the Explorer. Featuring a 1530 caliber movement.
- 114200: Automatic movement, scratch-resistant sapphire crystal, waterproof screw-down crown. 3130 movement 34mm.
- 6552: Built upon the 34mm Oyster Case.
- 1002: The 1002 is often quoted as an Air-King model, but it never was – it was only an Oyster perpetual.
- 1401: Stainless Steel. Water Resistant to 100 meters.
- 5701: A less-common model than most Air-King references.
- 116900: The newest and current Air-King model. Released in 2016. 39mm case.
Rolex Oysterquartz reference numbers (all Oysterquartz models)
- 17000: Among the first examples of the OysterQuartz watches. Made in early 1978. Tritium luminous. Caliber 5035 with date indication.
- 17013: Two-tone version with 18k yellow gold and steel. 100m water-resistant.Rolex caliber 5035.
- 17014: Quickset date, scratch-resistant sapphire crystal. 18k white gold fluted bezel. Datejust model.
- 19018: Full yellow gold. Available with different dials. Day-Date model.
- 19019: Day-Date model. Made in 18k white gold. 36 mm.
- 19028: Day-Date model. Pyramid design details. Pyramid motif on both the bezel and the center links of the President bracelet. Unique and rare version of the OysterQuartz. Full 18k yellow gold.
- 19038: A middle-way model between the 19028 and the 19068. Pyramid motif on the bezel and center links of the president bracelet as well as twelve diamonds mounted from the factory. The 1903 is just like the 19028 other than that it has diamonds on the dial.
- 19048: It is a 19018 but has a different reference number since it has a bezel fitted with 44 brilliant-cut diamonds.
- 19049: Full 18k white gold. Day-Date model. It is just like the 19019 but has a different reference number since it has a bezel fitted with 44 brilliant-cut diamonds.
- 19058: Extremely rare version of the Oysterquartz. One of the rarest versions. Fitted with a bezel with 44 curved baguette-cut diamonds, rubies, or sapphires.
- 19068: Day-Date model. Equipped with a 44 brilliant-cut diamond bezel.
- 19078: The rarest Oysterquartz models there is. Fitted with a rainbow gem-set bezel with 44 curved baguette-cut gems in rainbow colors, and a rainbow gem dial. Equipped with a 19028 pyramid bracelet. Day-Date model. Full 18k yellow gold.
- 19148: This model is just like the 19048 but features a bracelet with a twelve brilliant-cut diamonds per center link. The watch was crusted with 44 brilliant-cut diamonds on the bezel, 8 brilliant-cut diamonds on the case and 300 brilliant-cut diamonds on the bracelet. Day-date model.
- 19168: Featuring an octopus bracelet. Normally production year 1987. Baguette and brilliant-cut stones on the bracelet and 44 curved baguette-cut stones on the bezel Full 18k yellow gold.
- 19149: Day-Date model. Full 18k white gold.
Rolex Yacht-Master reference numbers
- 16622: Automatic Rolex cal. 3135 movement, Quickset, scratch-resistant sapphire crystal, waterproof screw-down crown. Platinum rotatable bezel. Made in Rolesium.
- 16628: Full 18K yellow gold. Automatic Rolex Caliber 3135 movement with date function. Movement with 31 jewels and quickset function. scratch-resistant sapphire crystal, waterproof screw-down crown. Rotatable bezel.
- 68623: 35mm. Two-tone with 18k yellow gold and stainless steel. Discontinued in 1999.
- 68628: Full 18k yellow gold. 35mm case. Rotating bezel.
- 168622: 35mm. Platinum Uni-directional rotating bezel. Platinum dial. Rolex Calibre 2235 automatic movement. 48-hour power reserve.
- 168623: Two-tone 18K contrasted by stainless steel. 100 meters of water resistance.
- 168628: Full 18k yellow gold. 100 meters waterproof. Automatic movement, scratch-resistant sapphire crystal, waterproof, screw-down crown.
- 169623: Two-tone. 18k gold and stainless steel.
- 169628: Full 18k yellow gold. Automatic movement. Bi-rotational Bezel, Date, Second Hand
- 169622: Platinum and steel. unidirectional rotating bezel.
- 166233: Mechanical automatic movement. Rotatable 18k yellow gold bezel. 18k yellow gold and stainless steel case and bracelet.
- 116689: White Dial with a body in white gold and platinum. Oyster bracelet in solid white gold.
- 116688: Yacht-Master II in yellow gold with a blue bezel.
- 116655: 40mm Yacht-Master in rose gold with black dial and bezel
- 69628: 29mm ladies’ Yacht-Master in yellow gold with a blue and white dial.
- 69623: 29mm ladies’ Yacht-aster in two-tone ( yellow gold and steel ).
- 116622: 40mm Yacht-Master in steel and platinum bezel. Available with blue or white dial.
- 268621: Two-Tone Yacht-Master in rose gold and steel in 37mm. Available with a brown/black dial.
- 116681: Yacht-Master II in two-tone ( Yellow gold and stainless steel ) with a blue bezel.
- 116621: 40mm Yacht-Master in two-tone (rose gold and stainless steel )
- 268655: 37mm rose gold Yacht-Master with an Oysterflex rubber strap.
- 268622: 37mm Yacht-Master in stainless steel and platinum bezel. Known for the blue second hand.
- 126655: Updated version of 116655 with new caliber 3235 and featuring Glidelock clasp.
- 126622: Updated version of 116622 with new 3235 movement.
- 226659: New Basel 2018 release. White gold 42mm case with Oysterflex bracelet.
Rolex Explorer reference numbers
- 1655: Explorer II nicknamed ”Steve McQueen”. 24-hour bezel, GMT hand, waterproof screw-down crown, acrylic crystal.
- 16570: Explorer II model. Black or white ”polar” dial. 24-hour bezel. GMT hand. Stainless steel.
- 16550: Explorer II model. A predecessor of 16570. Transitional reference 16550, which came between the 1655 and the
- 16570: Black and white dial. A mistake in the production made the early series of the white dials more cream-colored.
- 114270: Explorer I model. 36mm. 100m water resistance. 3, 6, 9 Arabic numerals.
- 14270: Explorer I model. no-date. 36mm. 3, 6, 9 Arabic numerals. caliber 3000 movement.
- 6610: Explorer I model. 3, 6, 9 indexes with tritium lime. One of the early Explorer models.
- 6350: The first watch to carry the Explorer name on the dial was the reference 6350. Launched in 1953.
- 6298: Prototype watch used by explorers in the early 1950s, eventually leading to the development of the Explorer line. Called ‘Big Bubblebacks’.
- 6150: Pre-explorer model. The 6150 is one of the rarest and earliest examples of the “Explorer” model which doesn’t carry the Explorer name on the dial.
- 6098: Big bubble back watch. The successor of the 5020.
- 5504: 3, 6, 9 Arabic numerals.
- 1016: 3, 6, 9 Arabic numerals in tritium lume.
- 216570: Black and white dial Explorer II 42mm
- 16570: Black and white dial Explorer II 40mm,
- 5506: Dating back to mid-1950’s. The first use of the Rolex 1530 automatic movement. Referred to as Rolex dress Explorers. Dressier versos of the then 1016 Explorer. Available in two-tone or gold-filled cases.
- 6299: The reference 6299, as opposed to the standard 6298, refers to the watch being Yellow gold/stainless steel as opposed to the ref 6298 being only stainless steel.
- 5500: Essentially an Air-king with a classic gilt 3,6,9 Explorer dial. Available in two variants: Precision and Super Precision. Produced only from 1958 to 1967
- 5501: Fluted gold bezel. ”Precision” on the dial and the text ”Explorer”.
Rolex Milgauss reference numbers
- 1019: One of the most sought-after vintage Milgauss. Without luminous dots as requested by CERN who needed a watch which wouldn’t interfere with their experiments since the tritium used as the luminous material emitted radioactive ”signals”. Because of this non-lune version, the 1019 Milgauss has become one of the more desirable vintage Milgauss models.
- 6541: Similar to an early Submariner in its case design. 25-jewel, self-winding movement. Featuring a black rotating bezel. lightning bolt-shaped seconds hand.
- 116400GV: The anniversary Milgauss edition “glass verte” with green sapphire glass.
- 116400: The first model in Rolex’s revived Milgauss collection which launched in 2007 after nearly two decades of absence.
Rolex Daytona reference number (and other Rolex chronographs)
- 116500LN -new 2016 released stainless steel Daytona with ceramic bezel.
Rolex Sea-Dweller reference numbers
- 1665: Can be seen with various types of dials. This reference features a double red print on the dial.
Rolex Cellini reference numbers
Rolex Datejust reference numbers
Rolex Bubbleback reference numbers
Rolex Day-Date reference numbers
On the inside of the clasp hinge, you’ll find what is known as the clasp/bracelet code. The clasp code on Rolex watches can be used to determine the year and month of the year when it was made. Have in mind though, that it’s not completely uncommon for Rolex watches to have bracelets that have a different date (thus were manufactured at a different time) than the watch’s case.
The clasp code consists of one or two letters which are then followed by a number. The letter in the code represents the year in which the bracelet was made, and the digits refer to the month it was made.
- A = 1976
- B = 1977
- C = 1978
- D = 1979
- E = 1980
- F = 1981
- G = 1982
- H = 1983
- I = 1984
- J = 1985
- K = 1986
- L = 1987
- M = 1988
- N = 1989
- O = 1990
- P = 1991
- Q = 1992
- R = 1993
- S = 1994
- W = 1995
- V = 1996
- Z = 1997
- Z – W= 1998
- X = 1999
- AB = 2000
- DE = 2001
- DT = 2002
- AD = 2003
- CL = 2004
- MA = 2005
- OP – 2006
- EO = 2007
- PJ = 2008
- LT = 2009
- RS = 2010
- CP = 2011
- The letter S gives information that the watch has a service bracelet.
For more information about Rolex clasp codes, read our complete guide to Rolex clasp codes.
We hope that you found this Rolex Serial number resource helpful! Don’t forget to take a look at our collection of Rolex watches available.
Do you have any additional specific questions regarding Rolex reference numbers and watches? Consult one of our watch experts here!
We have gone to great lengths to confirm and check so that the information provided here is correct, but if you see any incorrect information, kindly let us know and we will correct it.
34 thoughts on “Rolex Reference Number Guide: Complete Resource List”
Hey, I cant find the price to 16248 1987, 18K all over the internet.
Can you give some hint of prizes?
About 10-15K Euro depending on the condition, dial, accessories, bracelet etc.
I recently inherited a 1958 6605 Datejust. The jeweler tells me the ref. # is 354389. I cannot seem to make sense of it after reading your article. Am I missing something?
There is no such reference ever made. 6605 would be the reference number (model number) and then there is the serial number which is unique to the watch which is a different number.
I have two watches gifted that I am trying to get some info on to check authenticity and age. I have read the article and am still confused with the numbers I was given. A jeweler took the backs off
K886180 & 83858
1263000 & 62610
Thanks for your list of clasps, bracelets, and style and serial number, Thanks to your list I caught a guy selling counterfeit Rolex watches in Florida. The bracelets were the giveaway They all had the same number on them 16233 which is a style number not a bracelet number,
Glad you found it helpful!
Yes, that is definitely not correct!
Hi my wife has a Rolex Oyster Perpetual Date with white dial Roman numerals. It’s small size maybe 26mm the reference number is 78240 and bracelet AB7 and there is another number near the lugs 590B or something. It doesn’t say Date Just just Date. I figure it must of been made in July 2000. Is it real?
It’s impossible to comment on authenticity without having inspected it in person so we would advise you to take it to a professional watchmaker for an inspection.
590B would be the “end link” number, 78240 is the bracelet reference number.
I just purcahased a 2008 Rolex Yachtmaster Stainless Steel. It has a Rehaut with Rolex all around and the serial number. I also see the smail Rolex logo on the cyrstal at 6 o’clock(hard to find). I took it to a watchmaker who didn’t want to scratch the case by mistake, so we didn’t open the case. He had a machine thet he put the watch on that told him things I wasn’t fimilar with that proved to him it was good. It even told him it was running 14 seconds fast.He looked it over with his lope and said he thought it was real. My problem is the serial number on the rehaut is M905506. Any reference i can find including here says it should start with 166,686 or 696.
Do you think i have a fake? i have until 3-28-23 to return it to Chrono 24.
Thank you so much for any help you can offer.
In around 2009, Rolex began using random serial numbers for its watches. You still have a sequential serial number and based on the serial number you provided, the production year is 2007 or 2008. As such, that is correct for your watch as you mentioned it is from 2008. Based on this, there’s nothing wrong with the serial number of this watch and it doesn’t sound like it is fake. You also got reassurance from a watchmaker which is a positive sign as well.
I am trying to understand the difference between a Submariner reference number 16613 and 16613LB. Can you explain please?
LB stands for “lunette bleu” and refers to the use of a blue bezel insert. Rolex officially began using the term “LB” when they began using ceramic bezel inserts, which was for the model that replaced the 16613, 116613LB.
Since Rolex made both a blue and a black version of the 16613, you could say 16613LN or 16613LB for clarification. If you’re just talking about the models in general, you could say 16613 but that would not tell which version you are talking about. So technically, there is no difference other than the fact that you specify more closely if it’s a blue or a black version.
The bottom line is, there is no difference other that when you say “16613LB”, you’re specifically talking about the blue version.
Hi. May I ask you about the price of a 1833 dated in 1974. Totally new. Never used and with its original documents and box. Thank you so much in advance. Cordial greetings
A completely unworn and “new old stock” 1833 complete with box and papers is a true collector’s item and would definitely fetch a premium over models that have been used.
Depending on the dial, it would likely fetch somewhere around €30.000 to €40.000 but if it’s truly unworn and in brand new condition, and with a special and unique dial, such as a stone dial, it could fetch more than that at auction.