PIAGET OVALE DUOPLAN DIAMONDS Reference: 3867 A 6. Serial number: 158995. 18k yellow gold case. ‘Textured’ champagne-coloured dial. Hand-wound mechanical movement (calibre 9N). Yellow gold bracelet with signed folding clasp. Mineral crystal. Circa 1970. Diameter: 22 mm. Supplied with its original case. Gross weight: 50.6 g. An 18k gold wristwatch with a mechanical movement, by Piaget. Circa 1970. Disclaimer: Sold as is, with signs of wear and use. The movement was in working order at the time of writing this description; a routine service is recommended; no warranty is provided.