Archive
Archive
Patek Philippe · Grand Complications
3940J-001 is a Patek Philippe Perpetual Calendar reference, produced from 1985 to 2007 — an unusually long run of 22 years.
The case is 36mm 18ct yellow gold.
It runs the Cal. 240 Q, an automatic movement.
Catalogued dial colour: silver / white.
Within the Grand Complications references Watch Safe catalogues, it is the earliest by production start.
Landmark: first perpetual calendar with ultra-thin automatic movement.
The 3940J-001 was produced from 1985 to 2007.
The Patek Philippe 3940J-001 runs the Cal. 240 Q, 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 Patek Philippe? Look up its serial number in the registry.