Audemars Piguet

Royal Oak Tourbillon Extra-Thin Blue dial

Reference Number 26510ST.OO.1220ST.01
Verified Authentic
Genuine condition photos
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About this watch

Residing within Audemars Piguet's hall of fame is a slew of incredible timepieces that have gone on to shape the modern world of horology, but one watch leads the pack, the Royal Oak. Amongst the litany of incredible Royal oak variants produced lies the Royal Oak Tourbillon ref. 26510ST that we have here. Featuring an ultra-thin self-winding tourbillon movement, the cal. 2924, this incredible watch is just 8.85mm thick - an amazing achievement for any watchmaker. Coming in at a perfectly modern 41mm in diameter and featuring the very same construction that the Royal Oak is famed for, the ref. 26510ST is understated in its excellence as its design otherwise refrains from communicating its exclusivity and desirability outside of the tourbillon aperture found at 6 o'clock on its dial. This aperture also serves as the only clue to the ref. 26510ST's incredible complexity and the vast amount of horological prowess that was required to create the amazing machine.


Year of Production
Case Size (mm)
Case Bezel Material
Stainless Steel
Case Crystal
Case Dial Color
Case Dial Numbers
Indexes, Luminescent
Case Material
Stainless Steel
Caliber Movement
Calibre 2924
Power Reserve
Number of Jewels
Water Resistance
Strap Color
Stainless Steel
Strap Material
Stainless Steel
Strap Clasp
Folding Clasp
Strap Clasp Material
Stainless Steel
Hours, Minutes, Tourbillon

About the Brand+

Audemars Piguet

One of the most iconic names in Swiss watchmaking today, Audemars Piguet was established in 1875 by Jules-Louis Audemars and Edward-Auguste Piguet in the birthplace of Swiss watchmaking itself –the Vallée de Joux, Le Brassus. 

Audemars Piguet has cemented its 140-year legacy with an unrivalled ability to time-and-time again shatter the metaphorical horological ceiling in all facets technical and aesthetic. Its myriad of record-breaking releases over the century have, without doubt, paved the way for the era of modern horology we are so familiar with today.

A brand notorious for its bold releases, most bold of all, perhaps, was the debut of the Royal Oak in 1972 as the world’s first luxury sports watch crafted in stainless steel. The release sent shock waves throughout the watchmaking industry, but has since become the definitive blueprint of the modern steel sports watch, and its octagonal case one of the most sought after silhouettes in the world. AP’s later icons such as the Royal Oak Offshore and Concepts have further propelled the brand to new heights – not only within the watch industry, but also fostering its emergence as a 21st-century cultural icon. Today, APs transcend the world of watchmaking and double as a symbol of status and prestige, its pieces adorning the wrists of celebrities and royalty alike.

Despite trailblazing its way through modern Haute Horlogerie, tradition remains engrained in Audemars Piguet’s DNA -- it is the largest independent Swiss watchmaker still owned by its founding families. It is this connection that allows AP to marry its rich heritage and expertise in traditional watchmaking with ground-breaking design and craftsmanship. Each and every wristwatch boasts the manufacture’s complex savoir-faire and mastery of complications – and Audemars Piguet will no doubt continue to shift the paradigm of horology in the years to come, whether the world likes it or not.