Patek Philippe Complications Calatrava 40mm Weekly Calendar Stainless Steel Self Winding

The Patek Philippe Complications Calatrava 40mm Ref. 5212A-001 stands as one of the most conceptually original timepieces in the brand's contemporary catalogue, introducing a brand-new calendar complication at its 2019 Baselworld debut — the weekly calendar — displayed alongside the day and date through an unprecedented five-hand center configuration. The stainless steel case, a rare material choice for a Calatrava complication at Patek Philippe, measures 40mm in diameter and 10.79mm thick, with two-tiered lugs inspired by the one-of-a-kind Ref. 2512 from 1955 held in the Patek Philippe Museum. Cold-formed using high-tonnage presses and hand-polished by artisans, the case features multiple sharp edges and angular transitions that elevate its finishing to exceptional standards.

The exclusive Caliber 26-330 S C J SE was developed specifically for this reference and is based on the celebrated 324 architecture with a fully new weekly calendar module comprising 92 additional components. The self-winding movement houses 304 total components across 50 jewels, operating at 28,800 vibrations per hour with a 35-to-45-hour power reserve. Uniquely, the week and day indicators advance via a semi-instantaneous switching system driven by seven-pointed stars and a 53-tooth week wheel, while a built-in fail-safe permits safe calendar adjustment at any time, including around midnight. This caliber also introduced hacking seconds to the Patek Philippe lineup.

The silvery opaline dial carries handwritten-style typography created exclusively for this reference — a playful nod to paper diary entries — rendered in anthracite against the luminous dial surface. Five hands emerge from the central pinion: dauphine hands in blackened white gold for hours and minutes, a slender counterbalanced sweep seconds, and two red-tipped hammer hands tracking the day and weekly calendar. A date aperture sits at 3 o'clock. The brown calfskin strap is fitted with a steel pin buckle. Sapphire crystal front and exhibition caseback reveal the movement. Water resistance is 30 metres. Buy this preowned Patek Philippe Complications Calatrava 40mm Weekly Calendar Ref. 5212A-001 on Master Luxury with paper at exclusive price.