A Stainless Steel 'Royal Oak' "A-Series" Wristwatch, Audemars Piguet, No. A 1807, 39.00 mm case diameter, 'tropical' tapisserie dial signed AUDEMARS PIGUET, applied luminous steel baton numerals, date aperture at 3 o'clock, brushed steel octagonal bezel affixed with eight hexagonal screws, brushed steel tonneau case, hexagonal crown, case back affixed with eight screws, Cal. 2121 self-winding 36 jewel movement, brushed stainless steel link bracelet, deployant clasp. Case back engraved: Royal Oak No A 1807. Link stamp: AP. Clasp stamp: BREVETTE AUDEMARS PIGUET & CO SWISS STEEL INOX SWISS MADE. Estimate 4,000-6,000