Waltham Factory Mainspring for 6/0s Jewel & '42 Series No. 2226 - Steel

Waltham Mainspring for 6/0s Model 1898 Jewel Series movements as well as 1942 ('42) movements, Factory No. 2226, steel, new in frail or dirty envelope. These are grade names for the better of the 6/0 size movements: Diamond, Riverside, Ruby and Sapphire - hence the name "Jewel Series." These came in several different strengths and the ones I can supply are shown in the drop-down list. See images for further details. 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.