Vigor Open Loop Clock Mainspring - 66 x 6/0" x 43" Long - L 750.1

Vigor Clock Mainspring, OPEN LOOP End – Dennison 66 x 6/0 x 43″ Length, P/N L 750.1, steel, new in open envelope. See images for precise mainspring specifications. I specialize is hard to find watch & clock parts and all parts are unconditionally guaranteed. Images do a pretty good job of representing the item.