The string 11 45100 is not an Audemars Piguet reference number, and it does not match any official Royal Oak model code. On counterfeit Audemars Piguet watches it appears as a caseback or rotor stamp tied to a replica production batch, a reseller inventory tag, or a loose copy of an old case serial. It describes the fake, not a genuine watch.
What are fake Audemars Piguet codes?
"Code" is collector slang rather than a brand term. In the replica trade, factories and resellers attach short numeric strings to a watch so a buyer can name one production run instead of one model. Those strings then spread into listings and forum posts, which is why a search for 11 45100 returns watches instead of a catalog entry.
Does 11 45100 match a real Audemars Piguet reference?
No. Audemars Piguet references follow a structured format such as 15400ST.OO.1220ST.01, where the first block names the model, the second block names the case and bracelet material, and the final suffix names the dial. Genuine caseback engraving carries that full reference plus a separate case number, and the two never collapse into a two part numeric string. A stamp like 11 45100 sits outside that system.
Where do codes like 11 45100 appear on a fake?
- Caseback rim, laser marked or engraved next to a copied reference
- Rotor and movement bridges on open casebacks
- Clasp blades, end links, and caseback stickers
- Hangtags, plastic wrap, and printed certificates
How can you tell a stamped code from genuine Audemars Piguet engraving?
Genuine AP engraving is cut into the metal with even depth, sharp shoulders, and correct kerning, and it sits on a surface that was finished before engraving. Replica stamps tend to look shallow, blurry at the edges, or burned into the metal. A code that conflicts with the reference or case number beside it is the fastest tell of all.
Why do replica sellers list batch codes?
Batch codes let a seller flag a production run without naming the model, which limits trademark exposure in listings and ads. The same code can cover several dial colors, sizes, or movements, so it is a weak identifier. Treat any listing built around a code rather than a reference as a sign of an unlicensed product.
What happens if a coded watch is seized?
Counterfeit watches are prohibited merchandise in the United States, and U.S. Customs and Border Protection can seize shipments that carry infringing marks. Buyers risk losing both the item and the money paid for it, while sellers face trademark liability. Brands also keep serial and reference records that they use to authenticate watches during service.
Is 11 45100 a Royal Oak reference number?
No. Royal Oak references are printed in full on the caseback and recorded in warranty paperwork, and no Royal Oak model uses the bare string 11 45100. If a seller presents that code as a model number, ask for the full reference and a service record, then verify both with the brand before any money changes hands.