AUDEMARS PIGUET rare 18k yellow gold gents wristwatch...

AUDEMARS PIGUET rare 18k yellow gold gents wristwatch reference 5112 BA with calibre 2070, Switzerland around 1959, self winding, two-piece construction case with screwed-down case back, silvered duoton-dial with applied gilded hour-indices, gilded hands, rhodium plated movement with screw-balance, blued Breguet balance-spring, swan´s neck regulateur, 4 adjustments, fausses cotes decoration, oscillating mass in 18K gold, 29 jewels, from this cal. only 140 pieces produced, diameter approx. 35 mm, condition 2, literature "Die Noblen aus der Schweiz / J.M. Mehltretter" page 71, condition 2, property of a collector