Audemars Piguet Royal Oak Ref. 26674SG.OO.1320SG.01 41MM Sand Gold Perpetual Calendar

The Audemars Piguet Royal Oak Ref. 26674SG.OO.1320SG.01 represents one of the most elevated expressions of the Royal Oak lineage—uniting the architectural clarity of Gérald Genta’s design with one of haute horlogerie’s most revered complications: the perpetual calendar.

Crafted entirely from Sand Gold, AP’s proprietary alloy known for its warm champagne-toned hue, this 41MM Royal Oak commands attention with an understated opulence. Neither yellow nor rose, Sand Gold sits uniquely between the two—a refined, contemporary gold with exceptional light play across the brushed and polished facets of the integrated case and bracelet.

At its center lies a meticulously detailed Sand Gold-toned Grande Tapisserie dial, hosting the perpetual calendar’s four signature indications: date, day, month, and moonphase. The moonphase disc, rich in deep blue and accented by shimmering lunar detailing, anchors the dial with celestial presence. Slim white gold hands and indices ensure sophistication and legibility, while the leap year indicator and week-number scale underscore the mechanical complexity within.

Powered by AP’s ultra-thin selfwinding perpetual calendar calibre, the watch autonomously accounts for irregular month lengths and leap years—requiring no adjustment until the year 2100. Despite its mechanical depth, the profile remains remarkably elegant, a testament to AP’s mastery of movement architecture and component finishing.

Radiant, technically formidable, and exceptionally rare, this Sand Gold Perpetual Calendar embodies the pinnacle of Royal Oak craftsmanship—an heirloom piece designed for collectors who understand both its aesthetic purity and horological significance.