"Fake Seamaster 300M 291" is not an Omega model. "291" is an internal batch or version label used by counterfeit sellers, and it has no equivalent in Omega's reference system. A genuine Seamaster Diver 300M is identified by an Omega reference number, a case serial, and a METAS Master Chronometer certificate, never by a replica factory code.
What does the "291" code on a fake Seamaster 300M mean?
Counterfeit sellers group their output into numbered batches so buyers can compare one production run against another. Numbers like 291 appear in forum threads, chat groups, and listing titles, and they are swapped out whenever a workshop changes a supplier or a case detail.
Omega publishes no batch codes of that kind. The brand's own identifier is the reference number, such as 210.30.42.20.01.001 for a 42mm steel Seamaster Diver 300M.
How do you tell a fake Seamaster 300M from a genuine one?
Dial, bezel, and case
- Laser-engraved wave dial: on current models the waves are cut into a ceramic dial and catch light in sharp steps. Most counterfeits use a printed or shallow molded pattern.
- Bezel: genuine ceramic inserts have crisp enamel-filled numerals and a lume pip that sits flush. Fakes show uneven fill, a raised pip, or a misaligned triangle.
- Helium escape valve: sits at 10 o'clock and should be conical, polished, and precisely seated. Counterfeits often show a gappy seam or a flat-topped valve.
- Case finishing: genuine brushing and polishing meet at defined lines with no rounded lug edges.
Movement and caseback
- Calibre 8800 beats at 25,200 vph with a 55-hour power reserve and a silicon balance spring. Counterfeits run a decorated 2824 or similar import movement at a different beat rate.
- Current Diver 300M models have a sapphire caseback, so the rotor, engraving, and free-sprung balance are visible.
- Serial numbers are engraved on the lug at 7 o'clock and repeat on the movement, matching the certificate.
Papers and verifiable certification
Every current Seamaster Diver 300M ships as a Master Chronometer with an eight-digit certificate number that can be checked against METAS test data. The card, the reference number, and the case serial must all agree.
A replica seller's "291" tag cannot be verified by anyone. If a listing leans on a batch code instead of a serial, that is your answer.
Why batch codes like 291 are useless for judging quality
Batch labels shift every few months, and the same number can describe different watches from different workshops. No independent lab tests replica watches, so claims about movement, water resistance, or materials are unverified marketing.
Water resistance is the biggest gap. A counterfeit rated "300m" has not been pressure tested, and its gaskets are not built to dive watch tolerances.
Is buying a fake Seamaster 300M legal in the United States?
No. Trafficking in counterfeit trademarked goods is illegal under U.S. law, and merchandise can be seized at import with civil and criminal penalties for sellers. Buying one also forfeits service, warranty, and parts support, so resale value is close to zero.
If you want the real watch, buy from an authorized dealer or a seller who provides the reference number, serial, and METAS certificate so you can verify all three before paying.