A "fake Omega 2579" is a replica watch sold under a vintage Omega reference number that Omega never published as a single catalogued model. Sellers borrow the four digits from Omega's 1950s reference block so a new copy looks like a collectible. The number tells you nothing useful about the watch; the movement and the case do.

What does the Omega 2579 reference mean?

Omega used four-digit references in the 25xx range for watches built in the 1950s. The best-known number in that block is 2577, a Seamaster automatic. Reference 2579 sits next to it in the same sequence, and listings use it for Seamaster-style cases with automatic movements.

No public Omega archive page defines 2579 with a full spec sheet. That gap helps counterfeiters. A fuzzy reference is hard to disprove and easy to print on a caseback.

Why sellers reuse old reference numbers

Vintage collectors search by reference number, not by model name. Putting "2579" in a listing title pulls in that search traffic for a watch with no connection to the original.

Some sellers also mix real parts with fake ones. A genuine 1950s case can be fitted with a new dial, new hands, and a non-Omega movement, then listed as a 2579.

How to spot a fake Omega 2579

Work through these checks in order. Movement first, cosmetics second, paperwork last.

1. Read the movement

• Genuine Omega watches from this era carry a signed movement with a calibre number stamped on the bridge, such as 354, 501, 551, or 561.
• Replicas run generic Chinese or Japanese automatic movements. A blank rotor or a bridge with no engraving is a strong sign.
• Ask for a sharp macro photo of the movement before you pay. Sellers who refuse are hiding something.

2. Check the case and caseback

• Reference numbers on genuine Omegas sit inside the caseback, not on the outside of the case.
• Look at the caseback engraving. Laser-cut text with sharp, uniform edges points to a modern copy.
• Case shapes on 1950s Omegas have soft, worn edges after 70 years. A crisp, thick case is a red flag.

3. Study the dial and hands

• Old dial printing sits under a coat of lacquer and shows tiny cracks, called spidering, on many examples.
• Repainted dials have text that is too thick, too glossy, or spaced wrong. Compare against archive photos of a known 2577 or 2579.
• Lume plots on genuine watches age to a warm cream or brown. Bright white or bright green lume means new paint.

4. Weigh the patina and the price

A real 1950s Omega shows wear: scratches, dents, a stretched bracelet, a faded dial. A watch that looks 70 years old with zero marks is a replica or a rebuild.

Price is the loudest tell. A working vintage Seamaster automatic with a genuine movement sells for several hundred dollars and up, even in rough shape. A "2579" at $90 is a copy.

What a first copy or AAA replica gets right and wrong

Replica sellers grade their watches with terms like "first copy" or "AAA." Those grades describe finish level, not authenticity.

• Outside: a good replica can copy the case shape, crown, and dial layout well enough to fool a photo.
• Inside: no replica uses an Omega movement. Parts interchange with nothing from Omega, which makes servicing hard.
• Materials: case plating, crystal quality, and gasket seals fall short of the original, so water resistance is a guess.
• Value: replicas drop to near zero on resale, and many jewelers will not service them.

Red flags in an online listing

• Stock photos instead of pictures of the actual watch.
• No movement photo, or a photo that is blurred on purpose.
• The phrase "1:1" or "mirror quality" in the title, which are replica trade terms.
• A price far below market for a running vintage automatic.
• No return window, no serial numbers shown, and pressure to pay outside a protected method.

Is buying or selling a fake Omega 2579 legal?

In the United States, selling a watch that carries a counterfeit Omega mark is trademark infringement. U.S. Customs and Border Protection can seize counterfeit imports and destroy them, and the buyer loses the money.

Buying a replica for yourself carries a smaller risk than reselling one. Passing a copy off as genuine, even in a private sale, can lead to civil claims and, in repeat cases, criminal charges.

Many countries in Europe and Asia enforce the same rules. If you plan to travel with the watch, assume it can be confiscated.

Frequently asked questions

Is Omega 2579 a real reference number?

It sits in a real Omega reference range from the 1950s, but there is no single well-documented "2579" model. Treat any listing that leans on the number alone with caution.

How much does a genuine 1950s Omega Seamaster cost?

Prices run from a few hundred dollars for a rough, serviced example to several thousand for a clean one with box and papers. A full service from an independent watchmaker adds $300 to $600 in most markets.

Can a jeweler tell a fake from a real Omega?

Yes, in most cases. A watchmaker opens the caseback, reads the calibre number, and checks the movement finish. That check takes minutes and settles the question.

Do replica watches hold value?

No. Replicas sell for a fraction of their purchase price on the secondhand market, and most dealers refuse to take them.

What to do before you pay

Ask for movement photos, a caseback shot, and the serial number. Compare the dial against archive images of a documented 1950s Omega, and have an independent watchmaker inspect the watch before money changes hands.

If the seller pushes back on any of that, walk away. There are more vintage Omegas than there are honest listings, and the patient buyer gets the real one.