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The Audemars Piguet Royal Oak collection was introduced in 1972 at the Swiss Watch Show, which would later become known as Baselworld. It was released against a backdrop of rising concern among Swiss luxury watch manufacturers about ‘Quartz’ technology, and is widely recognized as the world’s first luxury sports watch.
The most recent addition to the Royal Oak collection came in 2019, with the release of the Royal Oak Ref. 15500ST and this remains in production. It retains the larger 41mm case size introduced via the Ref. 15400ST and also features the same, modern style AP folding clasp. However, there are also some notable differences, especially internally.
Perhaps the most important change is the introduction of the Caliber 4302 movement, which is a self-winding movement also utilized within the Audemars Piguet Code 11.59 watch. The movement is showcased thanks to a skeletonized movement oscillator, and because the movement is larger than the Caliber 3120, the date display is situated closer to the edge of the dial again, in much the same way as it was with the Ref. 15300ST.
BRAND: Audemars Piguet
MODEL: 15500ST.OO.1220ST.02
YEAR: 2021
BOX: Yes
PAPERS: Yes
WARRANTY: Yes
WATER RESISTANT: 100m
MOVEMENT: Automatic
CALIBER: 4302
MATERIAL: Steel
CASE DIAMETER: 41MM
CONDITION: Brand New