Audemars Piguet "Jumbo" Extra-Thin Openworked "50th Anniversary"

Audemars Piguet's Royal Oak "Jumbo" Extra-Thin Openworked "50th Anniversary", reference 16204ST.OO.1240ST.01, has a 39 mm steel case. The case measures a slim 8.1 mm thick, keeping the extra-thin profile the Jumbo is known for. A sapphire crystal covers the openworked dial, which exposes the rhodium-toned mainplate and bridges of the self-winding Calibre 7124. The gold oscillating weight, marked for the anniversary, is visible through the movement rather than hidden beneath a solid plate. Hours and minutes are the only functions, in keeping with the skeletonised construction. The watch is fitted with a stainless steel bracelet and an AP folding clasp. That clasp secures a case rated to 50 metres of water resistance.