Pre-owned balance wheel with bridge part for Longines watch with manual-winding movement of Longines caliber 280. Part number: 721 and 121/1 Also used in calibers: 281, 284..
Pre-owned balance wheel with bridge part for Longines watch with automatic movement of Longines caliber 291. Part number: 721 and 121/1 Also used in calibers: 290..