About
Free decoders for the codes on bags and watches, made by the makers of the Legit Check app.
What this site does
Each decoder reads one kind of code – a Hermès blind stamp, a Coach creed, a Gucci style number, a Seiko or Omega serial, a Cartier reference – and tells you what that code actually encodes: a year, a range of years, a model, or nothing at all.
A code never proves a piece is genuine. Counterfeits copy real codes, and genuine pieces can have worn stamps or no code. So the decoders never give a verdict on the piece, only on what the code says.
Who makes it
We make Legit Check, an iPhone app that checks a whole piece from photos. The links to the app on this site are to our own app.
How we build a decoder
Rules come from the brands where they publish them, and otherwise from resellers and auction houses; where we rely on collector databases (Seiko caliber years, the Omega and Speedmaster year tables) the page says so. Hermès, Omega and Cartier decoders are tested on pieces with known dates where we could find them (the pages say which years); Seiko on auction lots, whose dates may themselves come from the serial; Coach and Gucci on listings from resellers that authenticate what they sell. We rewrite any answer that could make an owner of a genuine piece think something is wrong. See sources.
Not affiliated with Hermès, Coach, Gucci, Seiko, Omega, Cartier or any other brand named here. Brand names are used only to say which codes a decoder reads.