
Audemars Piguet
Royal Oak Selfwinding 41
15500ST
The Royal Oak's modern 41 mm chapter, powered by an all-new calibre.
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Overview
The Audemars Piguet Royal Oak Selfwinding 41 reference 15500ST represents a significant evolution of the iconic octagonal sports watch first conceived by Gérald Genta in 1972. Housed in a 41 mm stainless steel case, it introduced Calibre 4302 — a movement developed entirely in-house to replace the long-serving 3120. The reference was produced from 2019 to 2022 and offered in four dial variants: blue, black, grey, and silver, each dressed with the hallmark Grande Tapisserie pattern.
History
Reference 15500ST succeeded the 15400ST as the standard 41 mm Royal Oak, debuting at Watches & Wonders Geneva 2019 alongside the smaller 37 mm 15450ST. The new Calibre 4302 brought a longer power reserve and a redesigned rotor compared to its predecessor, marking the most substantive movement upgrade the 41 mm Royal Oak had received in many years. Collectors noted subtle refinements to the case and dial finishing that distinguished the 15500ST from earlier references. Production concluded around 2022 as Audemars Piguet transitioned to updated references within the Royal Oak family.
Notable points
- 41 mm stainless steel case retains the signature integrated bracelet and octagonal bezel with eight hexagonal screws.
- Calibre 4302 is an entirely new in-house automatic movement, offering an extended power reserve over the outgoing 3120.
- Grande Tapisserie dial — a fine hobnail guilloché pattern — was offered in four colourways: blue, black, grey, and silver.
- Produced for approximately three years (2019–2022), making it a relatively short-lived but historically important reference.
- The 15500ST is widely regarded as a transitional milestone that modernised the Royal Oak's movement architecture while preserving its classic aesthetic.
Specifications
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