Elgin Factory Mainspring for 0s No. 2328 - Steel

Elgin factory mainspring Factory No. 2328 for 0s movements, steel, new in envelope. Has the typical Elgin DB&H end, See image for precise characteristics. Elgin mainsprings are typically coated in very old grease and must be cleaned before use. Not an easy size to find. 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.