Bokey Time“Diagrammed BBS Version Details” — BBS Audemars Piguet Royal Oak Perpetual Calendar Watch.
Model: 26574ST.OO.1220ST.03, positioned as the only version in the industry achieving full original-function replication.
This Royal Oak Perpetual Calendar represents refined horological craftsmanship, combining a noble and elegant blue dial with a cold-toned stainless steel case, fully expressing Audemars Piguet’s aesthetic language and high-level mechanical complexity.
The case is made of 316L stainless steel, with a diameter of 41mm and a thickness of 11.4mm. The blue dial is engraved with the signature “Grande Tapisserie” pattern, paired with applied hour markers and faceted hands coated with luminous material.
The dial layout is symmetrically arranged with three sub-dials and a moon phase display, clearly presenting multiple calendar functions in an organized structure, including hours, minutes, weekday, date, week number, month, moon phase, and leap year indication.
The sapphire crystal features anti-reflective coating, enhancing overall clarity and transparency.
It is powered by a 9015-based modified movement designed to replicate the Calibre 5134 automatic perpetual calendar architecture.
This watch is regarded as a highly refined “graduation-level” piece within its category.
Reference: 26574ST.OO.1220ST.03
