Borel Mainspring for Elgin 10s No. 6001-.0073 - Alloy

Borel Mainspring for 10s Elgin, factory #6003-.0073, alloy, new in envelope. Primarily for the Grade 542, and I do have some of the other variations available (-.0067 for example) so if that's what you need, please inquire. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. 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.