NuTemper Mainspring #559 for Waltham 16s, No. 2227 - Steel

NuTemper Mainspring #559 for Waltham 16s movements, Factory No. 2227, steel, new in envelope. See images for further details and 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