Vigor Open Loop Clock Mainspring - 36 x 3/0 x 28" Long - L 450/1

Vigor Clock Mainspring, OPEN LOOP End – Dennison 36 x 3/0 x 28″ Length, P/N L 450/1, steel, new in 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.