Comsco Mainspring #1182E for 16s Hampden Factory No. 5697 - Steel

Comsco Mainspring #1182-E for 16s Hampden movements, Factory No. 5697, steel, new in envelope. See images for precise mainspring specifications. I likely have several of these so the one you get may differ slightly from the images. Not an easy model of mainspring to find. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.