PIAGET PERPETUAL CALENDAR IN 18K YELLOW GOLD - From 1980 Reference N° 15958 Serial N° 492699 Year: 1980 Material: 18k yellow gold Weight: 50g Dimensions: 33mm Caliber: Automatic cal.8532 Crystal: Sapphire Bracelet: Leather with original Piaget 18k clasp Accessories: Original Piaget Box Very rare and well preserved perpetual calendar from Piaget, accompanied by original box. Worn few times. Currently working but some problems with the crown, service to be expected.