1960s Audemars Piguet Ultra Thin 18k White Gold Diamond-set silvered Dial 5139BCAn extremely rare and stunning 1960s Audemars Piguet Ultra Thin Diamond set silvered dial in 18k white gold. The watch is stunning condition, showing only light signs of wear or minor scratches, which are to be expected for a piece of its age. The Audemars Piguet reference 5139BC, produced in the 1960s, is a refined expression of mid century elegance and technical finesse, showcasing the brands mastery of ultra thin watchmaking. Crafted in 18k white