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Audemars Piguet · Royal Oak
The 41mm Royal Oak, produced 2012 to 2019, and for most of that period the entry point into the line. It is the reference that carried the Royal Oak through its transition from respected to unobtainable.
The 15400ST was produced from 2012 to 2022.
The Audemars Piguet 15400ST runs the Cal. 3120, an automatic movement.
Look up the watch's serial number in the Watch Safe registry to see whether a record exists or a theft flag is attached. A registry search identifies records for a specific serial; it does not authenticate the watch. Authentication is performed in person by an independent expert authenticator, and Watch Safe records and publishes the result.
Checking a specific Audemars Piguet? Look up its serial number in the registry.