Newall Security Mainspring #532 for 12s Waltham No. 2224A - Steel

Newall Security Mainspring #532 for 12s Waltham, Factory No. 2224A, steel, new in envelope. See images for precise mainspring specifications. I likely have several of these of 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 an adequate job of representing the item.