NuTemper Mainspring #585 for Waltham 6/0s "C" Factory No. 2248 - Steel

NuTemper Mainspring #585 for Waltham 6/0s "C" movements, Factory No. 2248, steel, new in envelope. See images for further details. 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.