Patrimony Openworked

In Context

At 30 mm it is small by current standards, in the range most wristwatches occupied before cases began growing through the 1990s. The 5.48 mm case is genuinely slim and goes under a shirt cuff without argument. 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 is hand-wound, so winding it becomes part of the day rather than something the watch does for you. Its 31-hour reserve wants wearing most days; leave it off and it stops. At 18,000 vph the seconds hand advances 5 times a second, the slower and more audible rate of an older design.

33158/000G-9394 stands on its own in this catalogue — no other reference here shares its base number. It pairs a skeleton dial with a white gold case.

Skeletonized version of caliber 1003. Hallmark of Geneva certified.

1 other watch in the library runs the Vacheron Constantin 1003 SQRH.

Vacheron Constantin

Patrimony Openworked

33558/000G-9394 · 30 mm