Short answer

Omega publishes no reference that matches "replica omega seamaster 300 41mm 223". The digits 223 appear in no Seamaster 300 reference number. Sellers use that string as an internal stock code. The watch behind those listings is the Omega Seamaster 300, a 41 mm steel dive watch sold through authorized dealers since 2014.

The watch being copied

Omega launched the current Seamaster 300 at Baselworld in 2014. Reference numbers start with 233 for the first run and 234 for the 2021 update. Steel models carry the Master Co-Axial calibre 8400 or 8912. Both movements use a co-axial escapement and twin barrels.

  • Case: 41 mm stainless steel, about 14 mm thick, 21 mm lug width
  • Water resistance: 300 m, rated to 1,000 ft
  • Crystal: domed sapphire front, sapphire display back
  • Bezel: ceramic insert with Liquidmetal dive scale, 120 clicks
  • Movement: 60 hour power reserve, 15,000 gauss magnetic resistance
  • Certification: METAS Master Chronometer, eight tests per movement
  • US retail: above $6,000 for steel on steel

Where copies fail inspection

  • Movement: the silicon balance spring has no regulator index. Copies use an ETA or Seagull base with a regulator arm and a screw balance.
  • Markings: genuine movements are stamped Si14. Copies show wrong fonts, wrong spacing, or no stamp.
  • Bezel: 120 detents with no play. Copies show 60 clicks, or a ring that moves under light finger pressure.
  • Caseback: a sapphire display back. Copies often use a solid back with laser etching that misses the wave edge profile.
  • Papers: the Master Chronometer card carries an 8 digit movement number that matches the caseback.
  • Lume: genuine Super-LumiNova glows blue-green for hours. Copy lume fades in under 30 minutes.

Legal status in the United States

Trafficking in counterfeit goods is a federal offense under 18 U.S.C. 2320. A first conviction carries up to 10 years in prison and a $2 million fine for an individual. US Customs and Border Protection seizes counterfeit shipments at the border. Trademark owners also file civil suits under the Lanham Act, 15 U.S.C. 1114. Buyers of counterfeit watches hold no warranty, no service parts, and no resale value.

How to verify a Seamaster 300

  1. Match the caseback number to the movement number on the card.
  2. Ask a watchmaker to open the back and read the caliber stamp.
  3. Check the bezel click count by hand.
  4. Compare the dial print and date font to a dealer sample.
  5. Request the original purchase receipt and box.

Unknowns

No published data confirms what the code 223 means. Omega does not list it. Treat any listing that uses it as unverified.