Elgin Factory DuraPower Mainspring for 8/0s No. 6002 - Alloy

Elgin DuraPower Factory Mainspring for 8/0s movements, Factory No. 6002, alloy, new in likely open envelope. This mainspring is available in several strengths and those that I can provide can be selected from the drop-down list, but if you're not sure the -.0041 is suitable for most all normal applications. I likely have quite few of these in each strength so the one you receive may different from the images. 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