C&E arshall Mainspring 289P for Waltham 6½L movements No. 2239 / 2272 - Alloy

C&E Marshall Mainspring 289P for Waltham 6½L movements, Factory No. 2239 / 2272, alloy, new in packaging. See image for precise characteristics. 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 an adequate job of representing the item.