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A. Lange & Söhne · Grand Lange 1
The Lange 1 enlarged to nearly 42mm, and the version where the asymmetric layout has the most room to work. The larger dial is why this reference reads as calmer than the standard Lange 1 despite showing exactly the same information.
The A. Lange & Söhne 115.021 runs the L901.2, a manual 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 A. Lange & Söhne? Look up its serial number in the registry.