Gold Souk, Deira
Patek Philippe Annual Calendar Regulator (Black), reference 5235/50R-001

Patek Philippe

Annual Calendar Regulator (Black)

Ref. 5235/50R-001

$45,800 · AED 168,200

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Case40.5mm 18k rose gold
DialBlack-grey sunburst, regulator layout
MovementCalibre 31-260 REG QA
StrapBlack alligator
Water30m
Year2026

A regulator dial separates the hands, with the minutes at the centre and the hours on a subdial, as on the master clocks watchmakers once used to set every other timepiece in the workshop. Patek first paired it with the annual calendar in 2011.

This Annual Calendar Regulator wears a 40.5mm 18k rose gold case with a dark sunburst dial, hours at twelve and seconds at six. Calibre 31-260 REG QA inside, on a black alligator strap.

Fun fact: the movement was the first Patek calibre to carry a regulator display, built on the slim 31-260 base with a micro-rotor.

The collection

Annual Calendar

The calendar Patek patented in 1996, set once a year at the end of February

Patek Philippe patented the annual calendar in 1996 and introduced it in the reference 5035, a self-winding watch that reads the long and short months by itself and needs one correction a year, at the end of February. It sits between a simple date and a perpetual calendar, since it knows which months run to 30 and 31 days but not February. The tell is three apertures for day, date and month set along the arc of a circle below 12, with a moon phase and 24 hour indication at 6 on many references. Patek files the family under Complications, and it runs from plain round gold references through the regulator, travel time and flyback chronograph versions to diamond set ladies models.

Sizes in the family

38 to 42 mm on current references, earlier pieces smaller

Who it suits

For the buyer who wants a calendar on the dial but is content to set it once a year, at the end of February.

See every Annual Calendar we have

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