Comsco Mainspring #1027 for Waltham 0s Factory No. 2220 - Steel

Comsco Mainspring #1027 for Waltham 0s Movements, Factory No. 2220, steel, new in frail or torn envelope. Distributed by Burton M. Reid and Sons. See images for precise mainspring specifications and further details. I likely have several of theses so the one you get may differ slightly from the images. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. Images do an adequate job of representing the item.