You’ve found an interesting vintage Omega watch. Perhaps on Ebay or another auction site or even at a yard sale. How to check the authenticity of an Omega watch?

Or in other words: how to spot a fake Omega?

This is an article about vintage Omega watches in general and the steps to take to authenticate them.

If you’re interested in specific models I recommend DetectaFake. They have an excellent article about Speedmasters and Seamaster dive-watches.

5 steps:

  1. Dial and hands
  2. Reference number/case number
  3. Caliber
  4. Serial number
  5. Crown and crystal

I’ve added some final tips at the conclusion.

#1: Dial and hands

First, look closely at the dial and hands. Omega is a respectable brand and they had standards to live up to. The lacquer, the font, the text/printing, minute track etc. should all be of a consistently high quality. The alignment should be perfect and there should be no misspellings of any kind. That includes the case and the case back as well.

The lume on the dial and in the hands (if any) should match. It’s possible that they changed to slightly different colors due to the exposure to light and humidity.

Also, keep in mind that lume will discolor over time. A watch that is 40, 50 years old or even older will show some minor signs of age at least and that’s fine. When the lume in the hands or on the dial is still extremely bright, that’s suspicious. It doesn’t immediately mean there is something wrong, but you should at least investigate further.

How to spot a Fake Omega

An Omega 30T2 with some extensive discoloration

Even if they did re-lume the dial or hands, it doesn’t make it a fake piece. It does mean, however, that it’s not 100% original anymore. You can read more about redials and how to detect them here.

The hands should be the correct type of hands that Omega would have used. Below you see a chart of hands that Omega would have used. More on the correct type of hands later.

How to spot a fake Omega

Omega hands

#2: Reference number/case number

Omega uses these numbers to distinguish between models and types. The number is stamped on the inside of the case back. This number may be used to look up the watch in question to compare the dial and the hands with the one you’re looking at.

Several books use these codes to list watches but the most common resource is the Omega Vintage Database. Not all entries have pictures but the database has lots of images to compare dials and hands. It also states what movements have been used and what the production timeframe was.

Be aware that the database isn’t always 100% accurate. It doesn’t include all reference numbers. However, it’s a very good resource and should be the starting point of a search for a particular vintage Omega watch.

The Vintage Omega Database sometimes uses an extra 0 after the decimal point. For example, the 136.041 is listed as 136.0041 in the Vintage Omega

How to spot a fake Omega

105 012-65 Speedmaster. Omega ALWAYS puts the triangle shaped logo and the case number/reference number on the inside of the case back. NEVER on the outside. Photo courtesy of Classicwatch.com

#3: Caliber

If possible, try to determine what movement the watch has. Certain models only used certain movements and movements were only used for a certain amount of time.

The Vintage Omega Database will list the movement or movements used for a certain reference number as well. When the caliber matches the one that the database has listed, you can check another item of your list.

The caliber designation is often visible on the movement itself. If it’s not clear you can always try to find the movement in Ranfft or
Caliber Corner.

#4: Serial number

All Omega movements have a serial number. On most movements, you can find it on the barrel bridge or train wheel bridge. The serial number can be used to determine (with an accuracy of 1-2 years) when a movement has been manufactured. This should match with the period in which Omega produced a certain model.

It’s entirely possible that there is a small gap in years between the movement and the watch. Sometimes the movement had been in stock somewhere for a while before being fitted into a watch. However, that shouldn’t be more than 1 or 2 years.

Some very useful charts that you can use to date your movement are by Omega-Fanatic and Chronomaddox.

How to spot a fake Omega

551 movement with serial number 20640033, which dates it to 1963

#5: Crown and crystal

Omega started to sign all the crowns and crystals around 1950. Some say it’s from 1945 onward and others say it’s sometime between 1947 and 1950.

There are a few Milspec Omegas that still didn’t have signed crowns after 1950 though.

So, if you have a civilian vintage Omega timepiece that was produced later than 1950 the crown and crystal should be signed.

How to spot a fake Omega

Signed Omega crown

The presence of a signed crown and/or crystal is no definite proof, though. There are dozens of different types of original Omega case parts. Theoretically, someone could fit a signed Omega crown to a watch that’s supposed to have a different crown. It’s an original crown but the watch is not the same as how Omega issued them.

Also, perhaps the stem or the crown (or both) needed to be changed and they couldn’t be bothered to use the correct parts. The watch might be perfectly original but it has a generic crown or an original crown of the wrong type.

That’s a little more difficult with a crystal because a crystal needs to be the exact size to fit well.

In other words, you should examine the crown and crystal but it’s not crucial proof one way or another. If it does correspond with the other info you’ve collected so far it’s another check mark on the list.

Final tips

Don’t let all these “rules” and warnings discourage you. Vintage watches are awesome and Omega is an interesting brand with many interesting models. That does mean, however, that it’s one of the brands that are most faked and tampered with, so just be careful.

If you checked all the items above and you’re still not sure you could always ask some questions on one of the forums. Members are usually very knowledgeable on how to spot a fake Omega and are willing to help.

Remember that prices way below market value are suspicious. There are still people who have no clue what they have but in the age of smartphones and Google, they are getting rarer every day. If it sounds too good to be true, it probably is.

Whenever you’re looking to buy on the internet you need to buy the seller and then the timepiece. If the description, pictures or his/her reputation raises your eyebrows, skip that one.

Sometimes it just doesn’t feel right and it’s a good idea to trust your gut in these moments. There will be plenty more along the way.

Do you have more tips or tricks on how to spot a fake Omega? Please comment below so that I can add them to the article.

Founder & editor of WahaWatches. I’ve been collecting watches for years. My favourite part is to pull them to bits.

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