Audemars Piguet 16202 BA 50th Anniversary Royal Oak Jumbo Ultra Thin 18 kt Yellow Gold “Smoked Gold” Boutique Exclusive Limited Edition. Gorgeous Gold Clous de Paris Petite Tapisserie Dial with Yellow Gold Applied Hour Markers and “Bagnoire” Luminescent Royal Oak Yellow Gold Hands. The 39 mm diameter solid Ultra-thin three-body case, bracelet, angled lugs with screwed bars, and flat bezel are polished/brushed. Glare proofed sapphire crystal and case back. It houses the new self-winding movement, Caliber 7121, and is fitted with the “50-Years” oscillating weight which echoes the case color, which can be seen through the skeleton exhibition sapphire case back. Fitted on a solid 18 kt yellow gold Royal Oak bracelet with double fold-over hidden buckle.
This Audemars Piguet 16202 BA Royal Oak Extra-Thin has a mechanical automatic self-winding Audemars Piguet caliber 7121 extra-thin movement, is rhodium-plated, with embellishment, and manual fine finishing of the bridges with polished bevels, perlage on the recesses, and satin-brushed edges. It has a shock absorber mechanism, bidirectional automatic winding, and a mobile balance-spring stud-holder. It’s constructed with 33 jewels, 268 components, a self-compensating flat balance spring with variable inertia blocks, and a straight-line lever escapement. It includes a balance that’s adjusted for heat, cold isochronism and 5 positions, and a 21 K gold oscillating weight and rotor. The mechanism oscillates at a frequency of 28,800 vph (4 Hz).
The 7121 took five years to develop and now uses a contemporary oscillating weight on ball bearings that uses two in-house reversers and the balance wheel gets inertia blocks for added shock-proof.