CR Mainspring #131 for Waltham 7¼ ligne Factory No. 2238 - Steel

Charles Robert Mainspring #131 for Waltham 7¼ ligne movements, Factory No. 2238, steel, new in envelope. See images for precise mainspring specifications. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.