AUDEMARS PIGUET very fine and extremely rare 18k yellow gold gents wristwatch model Royal Oak so called JUMBO model, self winding, B- series, Switzerland around 1978, two-piece construction solid gold case including bracelet with deployant clasp, design from Gerald Genta, white tapestry-dial restored, case back & octagonal bezel 8-times screwed, display of hours, minutes & date, rhodium plated movement hochfein veredelt, calibre 2121/1, fausses cotes decoration, 36 jewels, central rotor with 21k gold segment, flat rim balance, flat hairspring, adjusted in 5 positions, diameter approx. 39 mm, length approx. 19,5 cm, AP box enclosed, according to invoice in copy from Audemars Piguet winding stem & winding crown renewed in December 2011, signs of use due to age, condition movement 2, condition case 2-3, property of a collector