Marco Mainspring #272P for Waltham 16s "A" Model 1945 No. 2247 - Alloy

Marco Mainspring No. 272P for Waltham 16s "A" 1945 Running Barrel movements, Factory No. 2247, 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 is hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.