Ca. Ø51.5mm, ca. 95g, 18K pink gold, both sides very decoratively faceted, No.18557 /19536, case maker's punch EHD with crown, exquisite Ankerchronometer movement, wolf's toothing, pink gold wheels, especially large chronometer balance, fine adjusting device, all bridges with decoration, Louis Audemars bishop's crook lever, especially beautiful enamel dial, red minutes and red seconds (very fine hairline at the rim), gilt hands, in very beautiful, little used condition, in working order.