Royal Oak III 4100 — 4100ST

Audemars Piguet 2123

26 mm automaticAutomaticA mechanical movement wound by a rotor as the watch moves on the wrist. with centre secondsCentre secondsA seconds hand mounted on the same axis as the hour and minute hands. and date on a LeCoultre 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. (900), made for the 35 mm Royal Oak 4100 – the first Royal Oak with a seconds hand. Revised in 1979 as the 2123/1; just under 9,000 made 1977–1984.

Automatic · Introduced 1977 · 28,800 vph · 33 jewels · Ø 26 mm · 3.25 mm thick