Waltham 18s Mainspring Factory No. 2203 from S. LaRose - Alloy

S. LaRose packaged (likely Swiss made) Mainspring for 18s Waltham movements, Factory No. 2203, alloy, new in package. See images for precise mainspring specifications. I know it looks like someone wrote 2202 but it's really 2203. I likely have several of these so the one you get may differ slightly from the images. I specialize in hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.