Royal Oak Selfwinding 37

The Audemars Piguet Royal Oak Selfwinding 37 (ref. 15450ST) occupies a considered middle ground in the Royal Oak family, offering a 37 mm stainless steel case that suits a wide range of wrist sizes without sacrificing the line's iconic architecture. Powered by the in-house Calibre 3120, it pairs mechanical substance with the instantly recognisable Grande Tapisserie dial in blue, black, or silver. As a sport watch in the truest AP tradition, it carries the integrated bracelet and octagonal bezel that Gerald Genta conceived in 1972.

Reference 15450ST was introduced in 2015 as part of Audemars Piguet's effort to offer the Royal Oak Selfwinding in a size that sat between the long-established 41 mm and the smaller 33 mm references. The 37 mm proposition proved popular with collectors who sought the full Royal Oak experience — integrated bracelet, AP-signed folding clasp, and in-house movement — in a more versatile case diameter. Production continued until 2022, during which time the reference appeared across multiple dial variants, making it a recurring presence in the brand's core catalogue. Its discontinuation has since drawn collector attention to well-preserved examples.