Audemars Piguet Selfwinding "50th Anniversary"

Audemars Piguet's Royal Oak Selfwinding "50th Anniversary", reference 15510ST.OO.1320ST.05, measures 41mm in steel. The grey dial follows the Grande Tapisserie pattern and sits under a sapphire crystal. Inside is the self-winding calibre 4302, which drives central seconds and a date display. The date function is set discreetly into the dial layout typical of this reference. A steel bracelet with an AP folding clasp completes the piece, matching the case in tone and finish. This model belongs to the Royal Oak line's core Selfwinding range rather than a limited series, despite its anniversary designation. Water resistance is rated to 50 metres.