Patek Philippe

Annual Calendar Regulator

Name: Patek Philippe Annual Calendar Regulator
Brand: Patek Philippe
SKU: 5235G

5235G

Regulator discipline meets annual calendar intelligence in white gold.

Estimated market value

$44,000

Confidence: Moderate

An estimate from current market data — not an offer. Your actual value depends on condition, completeness, and authentication.

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Overview

The Patek Philippe Reference 5235G is a 40.5 mm white gold dress watch that unites the classical regulator dial layout with the brand's in-house annual calendar complication. Produced from 2011 to 2019, it belongs to the Complications collection and is driven by Calibre 31-260 REG QA. The two-tone silvery dial separates hours, minutes, and seconds onto distinct axes, lending the piece an architectural clarity rarely seen in calendar watches.

History

Patek Philippe introduced the annual calendar complication in 1996, and the 5235G extended that legacy by pairing it with the regulator display — a format historically favoured by precision observatory and marine timekeepers. The reference entered production in 2011 and was discontinued in 2019, making it a relatively focused production run within the broader Complications catalogue. Its white gold case and restrained two-tone dial positioned it firmly in the tradition of understated Genevan dress watchmaking. Among collectors, the 5235G is regarded as an intellectually satisfying piece that rewards close study of its dial architecture.

Notable points

Calibre 31-260 REG QA is a dedicated movement developed specifically for the regulator-style annual calendar display, with hours, minutes, and seconds read from separate sub-registers.
The annual calendar mechanism requires only one manual correction per year, at the end of February, distinguishing it from a simple triple-calendar.
The 40.5 mm white gold case sits at a scale suited to contemporary dress-watch proportions while remaining faithful to Patek Philippe's formal aesthetic.
The two-tone silvery dial employs a regulator layout — a historically instrument-oriented format — reinterpreted in a refined, haute horlogerie context.
Production spanned 2011 to 2019, giving the reference a clearly defined window that appeals to collectors who favour complete, closed chapters in a manufacture's catalogue.