HR Mainspring SA704 for 18s Waltham No. 2222 - Alloy

HR Mainspring SA704 for 18s Waltham, Factory No. 2222, Hole End, alloy, new in envelope. See images for precise mainspring specifications. I likely have several of these so the one you get may vary very 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.