A stainless steel automatic wristwatch with calendar, Audemars Piguet, 'Royal Oak Offshore', no. 166, circa 2000

nickel lever movement, 36 jewels, glucydur balance, adjusted to heat, cold, isochronism and 5 positions, 21k gold-edged rotor, yellow Clous de Paris dial, applied luminescent oval numerals, subsidiary seconds, apertures for day and month, outer ring calibrated for date, large tonneau water-resistant-type case with octagonal screw-set bezel, screw-down crown, case, dial and movement signed, with stainless steel Audemars Piguet deployant clasp, accompanied by Audemars Piguet Royal Oak Offshore cardboard slipcase and octagonal leather-covered display box.