Sandsteel Mainspring for Waltham 18s Factory No. 2222 - Steel

Sandsteel Mainspring for 18s Waltham, Factory No. 2222, steel, new in frail envelope. See images for precise mainspring specifications. These were available in a couple of different strengths and those that I can supply can be found in the dropdown list. I likely have several of these so the one you get may differ slightly from the images. 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.