The first perpetual calendar wristwatch to show day, date and month in a single line, in one aperture, on one level. Patek Philippe patented the mechanism: an in-line display needs four discs advancing together in a jump, which is why nobody had done it in a wristwatch before. The maker had shown in-line calendars in pocket watches, and this is the wristwatch answer.
Reference record
Production
2021–present
Model
In-Line Perpetual Calendar
Case material
Platinum
Case size
41.3mm
Movement
Automatic
Calibre
Cal. 31-260 PS QL
Dial colours
Silver / White
Market value band
$220k – $320k
Timeline
2021Introduced as the first in-line perpetual calendar wristwatch, with a blue dial
Notable
—The display is driven by four separate discs that advance in a single instantaneous jump.
What the specification implies
—The single-aperture in-line calendar is what distinguishes this reference. The 5270 shows day and month in two apertures with the date on a subdial.
—The movement is a self-winding micro-rotor calibre, unlike the manually wound perpetual chronographs.
Common questions
When was the Patek Philippe 5236P produced?
The 5236P has been in production since 2021.
What movement does the Patek Philippe 5236P use?
The Patek Philippe 5236P runs the Cal. 31-260 PS QL, an automatic movement.
How do I check a Patek Philippe 5236P 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.