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Rolex · Day-Date
Known in the trade as the President.
6511 is a Rolex Day-Date (First Reference) reference, produced from 1956 to 1959.
The case is 36mm 18k gold / platinum.
It runs the Cal. 1055, an automatic movement.
Catalogued dial colours: silver / white, black, brown / champagne.
Within the Day-Date references Watch Safe catalogues, it is the earliest by production start.
First wristwatch with day spelled out in full. Available only in precious metals — Rolex's flagship statement piece. 'President' nickname from the bracelet style introduced concurrently.
The 6511 was produced from 1956 to 1959.
The Rolex 6511 runs the Cal. 1055, 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 Rolex? Look up its serial number in the registry.