Piaget. An absolutely fine and glamorous Piaget skeletonized chronograph in 18k yellow gold and lapis lazuli and diamond-set Model: Skeletonized Chronograph Material: 18k yellow gold with diamond and lapislazuli Reference N°: 15940 Year: 1980 Case N°: 625202 N°2 di 10 Caliber: Manual Wind Movement N°: 93004 Bracelet: Leather Strap Dimensions: 44 Signed: Dial, Case and movement