Audemars Piguet Offshore 25854ST Quantieme Perpetual Chronograph Automatic in Steel

The Audemars Piguet Royal Oak Offshore Reference 25854ST occupies a singular position in the history of the Offshore line: it is the first model ever to integrate a perpetual calendar into the Offshore case, combining the most demanding calendar complication in watchmaking with the bold 44 mm sports architecture that had already redefined the industry's sense of proportion. Produced in stainless steel in a total of fewer than 50 examples across all configurations, with the steel variant believed to number only around 20 pieces, this watch represents the intersection of extreme rarity and extreme complication in a single object.

Key Specifications

Reference	25854ST
Year	1999
Case	Stainless steel, 44 mm, integrated crown protector
Dial	Blue, perpetual calendar layout with Grande Tapisserie pattern
Movement	Automatic, Cal. 2120/2802, perpetual calendar chronograph, 54 jewels
Functions	Hours, minutes, seconds, perpetual calendar (date, day, month, leap year), moonphase, chronograph
Bracelet	Stainless steel integrated Offshore bracelet
Total production	Approximately 20 examples in steel (fewer than 50 across all variants)

Collector's Note

The Caliber 2120/2802 at the heart of this watch has a lineage that begins in 1978, when Audemars Piguet introduced the thinnest self-winding perpetual calendar movement ever made. The 2120/2802 is the direct successor to that movement, developed in 1996 to accommodate the additional complexity of a chronograph function alongside the perpetual calendar. The result is a movement of extraordinary density: it displays the full perpetual calendar, a moonphase, and a chronograph within a case that, despite its 44 mm diameter, maintains the architectural coherence of the Royal Oak Offshore design language.

The steel case is the rarest configuration of the 25854: precious metal variants were produced in slightly larger numbers, while the steel examples were reserved for a clientele that understood the paradox of housing one of the most complex movements ever made in the most understated material available. The blue dial with its Grande Tapisserie texture gives the watch an immediate visual depth that changes character depending on the light, shifting from deep navy to electric blue. For a collector who wants the most complicated Offshore ever made in the rarest possible form, there is no more direct answer than this.

Why Buy From Us

Over 40 years of experience in the world of fine watches, backed by an outstanding reputation among collectors and dealers worldwide. Ask anyone about us.
Based in Miami, with an additional office in Europe.
Lifetime guarantee of authenticity on every watch we sell.
Every watch is thoroughly inspected and tested before being offered for sale.
Free overnight shipping throughout the United States.
Immediate refund in accordance with our return policy.