Nivaflex Unbreakable Mainspring for Waltham 7¼ ligne No. 2238 - Alloy

Nivaflex Unbreakable Mainspring for 7¼ ligne Waltham Movements, Factory No. 2238, white alloy, 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.