Quick answer
A fake Speedmaster uses the Omega name and trademarks without a license. Genuine Omega Speedmaster Professional Moonwatch references, such as 310.30.42.50.01.002, run the Co-Axial Master Chronometer caliber 3861. Most fakes use a Seagull ST19 hand-wind, a low-grade automatic, or quartz. Movement, dial print, case size, and caseback markings separate the two.
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What fakes get wrong
Movement
The genuine caliber 3861 runs at 25,200 vph, has 26 jewels, a 50-hour power reserve, and METAS Master Chronometer certification. A fake often hides a Seagull ST19 under an engraved bridge or a decorated rotor. The ST19 beats at 21,600 vph. Chronograph pushers on those fakes feel light, and the reset is not instant.
Dial and hands
- Text: genuine "OMEGA" and "Speedmaster" print stays sharp at 10x magnification. Fake print shows fuzz or thick edges.
- Subdials: the 3861 Moonwatch has three subdials at 3, 6, and 9. Fakes built on a 7750 or ST19 base shift those positions.
- Hands: genuine baton hands have flat polished sides. Fake hands show rounded edges.
Case and caseback
The genuine 42 mm case measures 13.2 mm thick on the sapphire version. Fakes vary by 0.5 mm to 1 mm. Caseback engraving on a real watch lists the reference, the serial number, and "Co-Axial Master Chronometer." Serial numbers on fakes repeat across batches. Omega can verify a serial through an authorized service center.
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Bracelet and clasp
The genuine bracelet uses solid end links. The clasp carries a stamped Omega logo and a 3-digit code. Fake clasps show shallow stamps and loose pins.
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Price and paperwork
Retail for a new steel Moonwatch is about $7,000 to $8,000 USD. Used references resell near $5,000 and up. A listing at $200 to $600 is a fake or a replica. Boxes and cards get copied. Papers do not prove authenticity. A service invoice from an Omega service center does.
Legal status in the US
US Customs and Border Protection seizes counterfeit watches at ports. Importing a counterfeit item for personal use is illegal under 19 U.S.C. 1526. Trademark holders can seek damages under 15 U.S.C. 1117. Penalties rise for repeat shipments.
Verification steps
- Ask for the reference number and serial.
- Photograph the caseback at macro distance.
- Compare the caliber number to the reference on the Omega site.
- Request a movement photo with the caseback removed.
- Pay a watchmaker who holds an Omega parts account for an inspection.
Unknown: exact fake production counts. No public dataset tracks Speedmaster replica output.