Elgin Factory Mainspring for 8/0s Grade 629 No. 6752 - Alloy

Elgin Mainspring for 8/0s caliber 629 movements, Factory No. 6352, alloy, new in envelope. The 629 movement is Font caliber 28 ébauche based so this mainspring will fit movements other than just the specified Elgin. See image 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