Comsco Mainspring #1048 for Waltham 6½ ligne No. 2239 - Steel

Comsco Mainspring #1048 for Waltham 6½ ligne movements, Factory No. 2239, steel, new in envelope. See images for precise mainspring specifications. 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.