Audemars Piguet Royal Oak Chronograph 26240BC. 01’Domaine de Murtoli Special Edition’ White Gold Purple Dial. The Audemars Piguet Royal Oak Selfwinding Chronograph 26240BC. The 41mm case is made of 18k white gold and complements the Grande Tapisserie dial in royal purple. Luminescent white gold hand and hour markers work with the Sapphire glare-proofed crystal for optimal legibility in any condition. An exhibition case back gives a glimpse at the Calibre 4401 in action, powering all of the watch’s complications, including Flyback chronograph timekeeping and date features. This special edition watch comes with an additional purple rubber strap. Royal Oak Selfwinding Chronograph. Original box, original papers.