Traditionnelle Perpetual Calendar Openworked

In Context

At 39 mm it sits just under the modern norm — the band that suits the widest spread of wrists. At 8.82 mm thick it is about average for a modern wristwatch. The case back is open, so the movement is visible without taking the watch apart, and the sapphire crystal will resist everything short of deliberate abuse. Rated to 30 m, it is protected against rain and splashes and nothing beyond that.

The movement winds itself from the motion of your wrist. 40 hours of reserve carries it overnight, but not through a weekend in a drawer.

43172/000P-9236 stands on its own in this catalogue — no other reference here shares its base number. It pairs a skeleton dial with a platinum case. Beyond the time it carries a perpetual calendar.

This hand-wound movement bearing the Hallmark of Geneva is equipped with an oscillating weight featuring the particularly meticulous finishing that is the signature of fine watchmaking. Beating at a frequency of 2.75 Hz (19,800 vibrations per hour), it has an approximately 40-hour power reserve. Calibre 1120 QP SQ drives indications of the hours, minutes and perpetual calendar featuring the day of the week in a subdial at 9 o’clock, the date in a subdial at 3 o’clock, the month and leap year on a 48-month subdial at 12 o’clock, and the moon phase at 6 o’clock. It is hand-skeletonized.

7 other watches in the library run the Vacheron Constantin 1120 QP SQ.

Vacheron Constantin

Traditionnelle Perpetual Calendar Openworked

43172/000R-9241 · 39 mm

Vacheron Constantin

Overseas Ultra-Thin Perpetual Calendar White Gold / Skeleton

4300V/120G-B946 · 41.5 mm

Vacheron Constantin

Overseas Ultra-Thin Perpetual Calendar Pink Gold / Skeleton / Bracelet

4300V/220R-B547 · 41.5 mm

Vacheron Constantin

Overseas Ultra-Thin Perpetual Calendar Pink Gold / Skeleton / Bracelet

4300V/220R-B642 · 41.5 mm