Audemars Piguet Royal Oak Perpetual Calendar Sand Gold, Ref. 26674SG.OO.1320SG.01

The Audemars Piguet Royal Oak Perpetual Calendar ref. 26674SG.OO.1320SG.01 is a 41 mm perpetual calendar in 18K sand gold, launched in 2025 as part of a new generation of the model. Sand gold is Audemars Piguet’s own alloy, with a soft tone between white and pink gold, used here for the case, bezel and bracelet. The sand gold-toned Grande Tapisserie dial shows day, date, week, month, leap year and an astronomical moon phase, with 18K white gold hour markers and luminescent hands. It is powered by the new self-winding Calibre 7138, which uses three patented mechanisms so every calendar function can be adjusted with the crown alone, without the small tools older perpetual calendars require. The movement runs at 4 Hz with a power reserve of about 55 hours, and the watch is water resistant to 50 m. This example is unworn from 2025 and comes as a full set with box and papers, priced at US$295,000 from SRK Haute Horlogerie.