CARTIER RIVIERA Reference: 10713. Serial number: 1492. 18k yellow gold case. White dial with Roman numeral hour markers. Hand-wound mechanical movement (ETA calibre 7001). Leather strap with a signed yellow gold pin buckle. Sapphire crystal. Circa 1980. Diameter: 31 mm. Gross weight: 28.3 g. An 18k gold wristwatch with a mechanical movement, by Cartier. Circa 1980. Condition: Sold as is, with signs of wear and use. Movement was functioning at the time of writing this description; a routine service is recommended; no warranty.