Understanding Watch Model & Serial Numbers

Being able to read watch serial numbers can be an enormous help when buying a pre-owned luxury watch.

Something I get asked about a lot, mainly – what’s the difference between watch serial numbers and watch model numbers? Where do I find them? How do they date my watch? Usually as a precursor to – how much is my watch worth?

At the end of this article you will find Watch Serial Number Lookup Charts for Rolex & Omega.

Model Number ‘v’ Serial Number​

They are two totally different things.

The model number might also be called the ‘reference number’ or ‘style number.’

Unlike the serial numbers that are unique to a watch, model numbers are shared across watches. In the case of Rolex, the model number will tell you which particular collection a watch belongs to and helps identify materials used on a particular Rolex.

Watch Serial Number Check – Why It’s So Important

The watch serial number will tell you the estimated date of production of a watch and help trace authenticity. Therefore when it comes to estimating the value of your watch or buying a pre-owned luxury watch, the serial number is the most important of the two.

Whether you’re trying to value your watch or just interested in its history, it’s always good to check the watch serial number maches the paperwork. In the past, many official watch dealers have given the wrong paperwork with the watch, unaware of the later significance this would have when it comes to value. It’s not until the customer or a family member comes to sell the watch many years later, they realise the dramatic effect this can have on the value of the watch.

A quick watch serial number check can also reveal if it has been stolen, or to autheticate whether is is genuine or counterfeit. If a model was first released in the 1980’s but has a watch serial numbers dating it to the 1970’s, it is very likely a fake.

However, with technology as it is, it is very wasy to fake watch serial numbers and papers. It’s worth doing an internet search as counterfeiters tend to use the same number for whole batches of copies. These may have already been identified as fakes by other watch lovers who have done a watch serial number check and reported it.

For brands such as Omega and Rolex, the serial number is also a way to keep track of a watch. A register of a watch’s service history helps the manufacturer to identify returning problems or indicate parts that might need replacing based on the age of the watch.

What do Model & Serial Numbers look like? ​

This will vary between brands and for the purpose of this article, we’ve focused mainly on Omega & Rolex.

How do I find the Serial & Model Numbers?

If you have a Full Set, then the serial and model numbers will be on the paperwork – warranty card, certificate of authenticity, service records. If not, your next steps are ……

Rolex Model & Serial Numbers Check

Rolex is unique in that it etches the model and serial numbers between the watch lugs. You will need to remove the bracelet/strap to see it. The model number describes the materials used, the calibre and the type and colour of the bezel. It can be quickly used to find out whether it is an original Rolex or a fake by comparing it with data from trade publications and Rolex catalogues.

It’s easy to get the model number mixed up with the serial number on a Rolex. The model number is generally four, five or six digits long, whereas watch serial numbers can be up to eight digits long. The model number is engraved on the lugs at the 12 o’clock end.

Locating a Rolex Serial Number

If your Rolex was manufactured before 2007, the serial number will be located between the lugs at 6 o’clock (where the bracelet connects to the watch). Between 2008 -2010, Rolex decided to put the serial numbers on the 6 o’clock inner bezel (the thin band between the watch face and the outer casing – see above image)

To complicate things further, Rolex changed the way they produced serial numbers on three different occasions.

• 1927-1987: Every Rolex had a 5-6 digit serial number depending on the year. The higher the number the more recent the Rolex.
• 1987-2010: Rolex introduced a letter for each year which was followed by six digits. For example W00001 would have been the serial number for the first men’s Rolex watch made in 1984. For this brief period, the letter is the most important part, because it tells you approximately when your watch was made.
• 2010: Rolex serial numbers were randomised to eight digit codes. Making it impossible to track and date watches purely on serial numbers. Adding to the increased value of a Full Set!

Keep scrolling for our ‘Watch Serial Number Lookup Charts’ at the bottom of this article.

Omega PIC & Serial Numbers

Omega use serial numbers and refer to their model number as PIC Numbers (Product Identification Code).

The PIC number is used to identify the model, materials, functions and features of each watch. This can be found on the accompanying paperwork. However, Omega has changed systems over the years.

• PIC Pre 1962: Simple alphanumeric code of two letters followed by four digits.
• PIC 1962-2007: They used a Mapics system, consisting of two letters followed by either six or seven numbers.
• PIC 1988: this ran concurrently with Mapics and featured an arrangement of eight numbers in three groups
• PIC Now: PIC14 structure, with 14 digits in six groups.

Luckily, Omega serial numbers are less complicated as they are issued more or less chronologically. Therefore they can be checked against a production chart to get an approximate date of a watch. See our ‘Watch Serial Number Lookup Charts’ at the bottom of this article.

In 1894, Omega started using serial numbers with 1,000,000. Every watch since, has been given a seven or eight digit number, following on sequentially until around 2019, when they hit 99,999,999. However, as always, there are a few exceptions, keep reading.

In 2019, Omega followed the same route as Rolex and started using randomised eight digit numbers, making it near impossible to work out the date of watches without the paperwork.

If your watch doesn’t have the paperwork, don’t despair – you can order an ‘Extract from the Archives’ directly from Omega. This document will also reveal things like which country the watch originated and is a paid service offered by most luxury watch manufacturers.

Locating an Omega Serial Number

Alternatively, you can locate the number on the watch itself. Depending on the age of the watch, the main areas to check are – the movement, inside of the case back, outside of case back and underside of the lugs. From 1990 onwards, Omega watch serial numbers started to be etched onto the lugs or case back.

Much older models might have it engraved on one of the internal movement bridges or elsewhere inside the case back. Again – don’t be tempted to remove the back yourself, ask an expert and avoid damaging your potentially very valuable vintage watch.

I mentioned earlier that there are a few exceptions.

Despite being a fastidious industry, mass production of watches led to movements sometimes being assembled much earlier than the rest of the watch. So a newer model could well have a lower serial number than an older one. This is an industry wide exception, not just Omega.

Omega has been known to vary the position of their serial numbers on the same model type. So not finding a number where you’d expect, doesn’t automatically mean it’s a fake. You will need to check the other main areas as detailed above.

Finally, and a bit of a mystery to all, the Omega Speedmaster range has its own numbering system, refer to the ‘Watch Serial Number Lookup Charts’ below for more information.

Other Luxury Watch Brands & Serial Numbers

They all vary, but as with Omega, the main areas to check are the movement, inside of the case back, outside of case back and underside of the lugs.

In Conclusion

Because of discrepancies in manufacturing, watch serial sumbers should only be used as an approximation. If in doubt – ask an expert – ask us!