Waltham Factory "Regular" Mainspring for Waltham 6/0s Jewel Series No. 2226 - Steel

Waltham Regular Mainspring for 6/0s Jewel Series movements, Factory No. 2226, blue 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.