Audemars Piguet Royal Oak Perpetual Calendar

The Audemars Piguet Royal Oak Perpetual Calendar ref. 26252OR stands among the modern high points of Swiss haute horlogerie: an ultra-thin perpetual calendar that distills Audemars Piguet’s technical culture into the unmistakable Royal Oak architecture, where sporting strength and formal elegance coexist with rare mechanical complexity.

Executed in 18k rose gold, this reference belongs to a collector-favoured generation powered by the celebrated calibre 2120/2802—an evolution of the legendary 2120 family and widely regarded as one of the finest automatic bases ever used by the manufacture. Valued for its exceptional thinness, reliability and finishing, it represents a chapter of perpetual calendars that is increasingly difficult to find in truly original condition. This example is dated April 2011 and is offered in excellent state, notably unpolished, with crisp case lines and a well-preserved octagonal bezel—attributes that the market consistently rewards as collectors place growing emphasis on untouched geometry and honest surfaces.

Equally important is the completeness of the provenance: the watch is offered as a full set, including the special presentation box with integrated winder designed to keep the movement running, alongside the original warranty and correct operating literature for the perpetual calendar and rotating box. In an investment-aware context, correctness and completeness materially support long-term desirability, liquidity, and auction readiness, especially for complicated Royal Oaks where documentation and accessories increasingly separate the best examples from the rest.