Short answer
A fake Omega Seamaster 300 41mm with a ceramic bezel is a counterfeit copy of the steel Seamaster 300 that Omega released in 2021. The real watch runs the Master Chronometer calibre 8912, uses a two-plate sandwich dial, and has a ceramic bezel insert filled with white enamel. Most copies fail on four points: movement, bezel scale, dial construction, and price. The steel model on a bracelet listed at about $6,400 USD at launch. An offer far below that number is a copy, a damaged watch, or a stolen one.
What the genuine watch is
- Case: 41mm steel, about 13.85mm thick, 48mm lug to lug.
- Bezel: ceramic insert with a white diving scale in enamel.
- Dial: sandwich build. Two plates. The lower plate holds the lume, the upper plate is cut so the hour markers sit in recesses.
- Crystal: domed sapphire with anti-reflective coating on the inside face.
- Movement: calibre 8912, co-axial escapement, silicon balance spring, 60-hour power reserve, 15,000-gauss magnetic resistance.
- Water resistance: 300m. Screw-down crown at 3 o'clock with crown guards. No helium escape valve at 10 o'clock. That part belongs to the Diver 300M line.
- Date: window at 6 o'clock.
- Caseback: screw-in, sapphire display, laser-etched text that includes "Master Chronometer".
Bezel check
On the real insert the numerals and markers sit in the ceramic and are filled with enamel. The surface reads level under a fingernail. On copies the scale is printed or painted on top of the insert. It sits proud of the surface and scrapes off with a coin edge. Check the triangle at 12 against the crown at 3. Copies often show a half-degree offset. The genuine bezel turns with firm, evenly spaced clicks and no back-play.
Dial check
Run a finger over the hour markers. On the real sandwich dial the markers are holes in the top plate. The lume sits below the surface. On copies the markers are applied on top of a single plate, so the lume sits above the dial face. Look at the print under a 10x loupe. Genuine dial text has sharp edges. Copy text shows dot gain, uneven letter spacing, and a thicker font weight. The applied Omega logo should sit flat and cast a clean shadow. Copy logos sit crooked or stand off the dial.
Movement check
Look through the display back. Calibre 8912 has arabesque Côtes de Genève stripes, blackened screws, and engraving that names the calibre. Copies use a stock third-party automatic movement or a decorative plate screwed over one. Signs of a copy: wrong stripe pattern, screws with damaged slots, a rotor that spins with no resistance, and text that spells the calibre number wrong. Magnetism is a fast test. A Master Chronometer keeps time inside a 15,000-gauss field. A copy will run fast or stop.
Case, crown and serials
The genuine crown is signed and laser-etched. Case brushing runs straight on the lugs, and the polished bevels meet the brushed faces on a sharp line. The serial number is engraved on the movement and on the case. The two must match. Omega will confirm a serial against its records. A copy tends to carry the same serial on thousands of units, or a serial from a different reference.
Box, cards and price
The real watch ships with a presentation box, a pictogram card, a METAS Master Chronometer card that carries the serial, and a warranty card. The cards must match the case serial. Copies ship with mismatched serials across cards, misspelled model names, and card formats Omega does not use. Omega gives a 5-year warranty from the date of purchase. No counterfeit qualifies for service at an Omega service center at any price.
US legal note
Counterfeit watches are illegal to import into the United States and illegal to sell. US Customs and Border Protection can seize a shipment, and the buyer loses the money. Trademark infringement on imported goods falls under 19 U.S.C. § 1526. Resale of a known counterfeit can bring civil liability under the Lanham Act.
Check order
- Compare the price against the current Omega list price.
- Match the case serial to the movement serial and to the cards.
- View the movement through the caseback and name the calibre.
- Press a fingernail on the bezel scale. It must be flush.
- Feel the dial markers. They must sit in recesses, not on the surface.
- Ask for a magnetism test result if the seller has a tester.