A fake Omega Seamaster 300M 210 is a counterfeit of the Seamaster Diver 300M. Reference numbers that start with 210.30.42.20 cover the 42 mm steel model that Omega released in 2018. Omega lists these watches at about $6,000 USD. Counterfeits sell for $50 to $600. The copies match the case shape and the dial. They do not match the movement inside.

What the 210 Reference Covers

  • 210.30.42.20.03.001: 42 mm steel case, blue ceramic dial, steel bracelet.
  • 210.30.42.20.01.001: 42 mm steel case, black ceramic dial, steel bracelet.
  • 210.32.42.20.xx: 42 mm case on a rubber strap.
  • Older 300M models use other prefixes. The 2531.80 and 2220.80 belong to the 1993 to 2012 generation. A watch sold as a 210 with a flat printed dial has a mismatch.

Where Counterfeits Fail

  • Movement. The 42 mm model uses the Omega Co-Axial Master Chronometer Calibre 8800. It has a silicon balance spring, a 55-hour power reserve, and a rating of 15,000 gauss. Counterfeits use generic automatic calibers from China or Japan. No fake caliber holds a METAS certificate.
  • Caseback. Genuine watches carry a wave-edged sapphire caseback with the Seahorse medallion, "PROFESSIONAL", "Co-Axial Master Chronometer", the eight-digit reference, and a METAS test number. Fakes show shallow engraving and wrong fonts.
  • Master Chronometer card. Omega ships each watch with a card that lists the METAS test result and the serial number. A seller who cannot show that card has no proof of origin.
  • Bezel. The diving scale sits on a ceramic insert with white enamel. The bezel turns in 120 clicks and lines up at 12 o'clock.
  • Crystal. Omega uses domed sapphire with anti-reflective coating on both faces. Many fakes use mineral glass or flat sapphire.
  • Helium escape valve. On the 300M it sits at the 10 o'clock position and works. Many fakes place a dead cone there.
  • Dial. The 2018 model has laser-engraved waves on a ceramic base. The depth and the reflection differ from printed replicas.

Price Signals

Omega sells the 42 mm steel bracelet model at about $6,000 USD. Used examples trade below that. A listing under $1,000 for a 210 reference points to a counterfeit. The "super clone" tier sells for $300 to $600 and adds a decorated rotor. Those watches still fail a timegrapher check on beat rate and amplitude, and they take no Omega service parts.

Legal Risk in the United States

19 U.S.C. § 1526 bars the import of goods that carry a counterfeit mark. U.S. Customs and Border Protection can seize and destroy the shipment. 18 U.S.C. § 2320 makes trafficking in counterfeit goods a federal crime, with prison terms and fines. Payment processors and freight carriers block these sales as well. A buyer who resells can face the same charges as the seller.

How to Verify a 210 Reference

  1. Read the eight-digit reference from the caseback and compare it with the listing.
  2. Ask for the Master Chronometer card and the serial number.
  3. Request a timegrapher photo at the 6 o'clock position.
  4. Take the watch to an Omega authorized service center. Staff there can open the case, check the caliber number, and check the serial.
  5. Check the case thickness. The 42 mm 300M measures about 13.5 mm. A thin case with a 210 reference is wrong.

No public database confirms a serial number on its own. An Omega service center and the Extract of the Archives service are the two checks that carry weight.