Audemars Piguet Royal Oak Concept 26228BC, Tourbillon, Diamond Baguette, 18K White Gold, Skeleton Dial, 39 mm

Boldly embracing steampunk design, the Royal Oak Concept collection celebrates architecture in all its facets. The 38.5 mm 18k white gold case is assembled with baguette-cut diamonds, a crown set with a translucent sapphire cabochon, and a hand-stitched ‘large square scale’ white alligator strap. Powered by the hand-wound 2951 calibre, this flying tourbillon has a 77-hour power reserve.