Short answer
Fake Omega 151 is not a model. Omega's catalog has no watch named 151, and no Omega reference number is written as 151 alone. The string shows up in three places: a stock code from a reseller, a fragment of a vintage case number, or a typed guess. Any listing that uses 151 as the model name has no verifiable reference behind it.
What the number could be
Vintage Omega case numbers use six digits in two groups, such as 145.012 for a Speedmaster Professional and 168.005 for a Constellation. Sellers cut these to three digits in titles. If 151 shows up, ask for the full case number, the movement number, and photos of the caseback inside.
Modern Omega references use eight digits. The Seamaster Diver 300M in steel with a black dial is 210.30.42.20.01.001. A three-digit code fits neither format on its own.
Why the word fake matters
A counterfeit Omega copies the case shape, the dial text, and the logo. Replica sellers price these watches from about $50 to $400. Genuine steel Omega watches start near $3,000 at retail. Used prices for a Speedmaster or Seamaster sit above $1,500. A seller who offers an Omega 151 for $200 is selling a counterfeit or a watch with no Omega parts.
Checks to run
- Search the reference on Omega's site or a reference database. If nothing matches, the number is wrong or invented.
- Ask for the serial number on the movement and the caseback. An Omega service center can confirm the production date and model from those numbers.
- Compare dial fonts. Fakes use thicker strokes on OMEGA and uneven spacing in SWISS MADE.
- Check the date window and the lume. Real Omega alignment is tight. Replica alignment drifts.
- Weigh the watch. A steel Seamaster or Speedmaster on a bracelet runs about 150 g to 180 g. Replicas come in lighter.
- Look at the crown and pushers. Real parts sit flush and thread with no grit.
Legal and money facts
U.S. Customs and Border Protection lists watches among the goods seized most as counterfeits at U.S. ports. Import of counterfeits is illegal under 19 U.S.C. 1526 and 18 U.S.C. 2320. The FTC states that counterfeit goods can carry safety risks and fund illegal activity. Payment by bank transfer or crypto leaves no refund path.
What is not known
No public source ties Omega 151 to a specific Omega product. If a seller calls it a rare model, ask for a written reference and a photo of the caseback engraving. Without those two items, the claim cannot be checked.