The small-crown Submariner, rated to 100 metres against the big-crown 6538's 200. The suffix is the part worth knowing: a 6536/1 is the chronometer-certified version, and those were the first Submariners to carry the rating at all. The bare 6536 is the same watch without it.
Reference record
Production
1955–1959
Model
Submariner (Small Crown)
Case material
Stainless Steel
Case size
37mm
Movement
Automatic
Calibre
Cal. 1030
Dial colours
Black
Market value band
$60k – $140k
Notable
—The /1 records chronometer certification, not a later series or a variant dial.
What the specification implies
—A 6536 and a 6536/1 differ in certification. The suffix is not decorative and not interchangeable.
Common questions
When was the Rolex 6536 produced?
The 6536 was produced from 1955 to 1959.
What movement does the Rolex 6536 use?
The Rolex 6536 runs the Cal. 1030, an automatic movement.
How do I check a Rolex 6536 with Watch Safe?
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.