Jurgensen Mainspring #655B for 16s Hamilton Watch No. 534B - Steel

Jurgensen Mainspring #655B for 16s Hamilton Movements, Factory No. 534B, steel, new in envelope. Could also fit in other watches as well. See images for precise mainspring specifications. I specialize is hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.