Royal Oak 15202 — 15202ST cosmos blue dial

Audemars Piguet 2121

Date version of the 2120, introduced in October 1970 in model 5381 and chosen for the first Royal Oak in 1972; at the time the thinnest automaticAutomaticA mechanical movement wound by a rotor as the watch moves on the wrist. with central rotorRotorAn oscillating weight that uses wrist movement to wind an automatic watch’s mainspring. and date. ÉbaucheÉbaucheAn incomplete movement supplied for further work before it becomes a finished watch mechanism. The parts included in an ébauche have varied by period and supplier; the term does not by itself specify a complete, assembled movement. from LeCoultre & Cie until about 2002, then made by AP; replaced by the 7121 in 2022.

Automatic · Introduced 1970 · 19,800 vph · 36 jewels · 40 h reserve · Ø 28 mm · 3.05 mm thick