Grade not disclosed by the source; the edge points at the grade-unknown execution.
Watch model
Vacheron Constantin Patrimony Contemporaine Ultra-Thin Calibre 1731
Vacheron Constantingrain: model
no sourced photograph
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Movement
Sources
- 1Monochrome Watcheshttps://monochrome-watches.com/vacheron-constantin-introduces-the-worlds-thinnest-minute-repeater-caliber-and-thinnest-minute-repeater-watch/presstier 2retrieved 2026-08-251 fact on this page