Vigor Open Loop Clock Mainspring - 33 x 9/0 x 27" Long - L 420.1

Vigor Clock Mainspring, OPEN LOOP End – Dennison 33 x 9/0 x 27″ Length, P/N L 420.1, steel, new in open envelope. Suitable for Keinzle caliber 24/17. 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.