HR Mainspring SA722 for 12s Waltham Factory No. 2224A/2279 - Alloy

HR Mainspring SA722 for 12s Waltham, Factory No. 2224A / 2279, alloy, 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 and all watch parts are unconditionally guaranteed. Images do an adequate good job of representing the item.