Newall Security Mainspring #566 for Waltham 7¼ ligne No. 2238 - Steel

Newall Security Mainspring No. 566 for Waltham 7¼ ligne Model 650 movements, Factory No. 2238, 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. 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.