Elgin Mainspring for 3¾ x 10 ligne Grade 897 Factory No. 6351 - Alloy

Elgin Mainspring for 3¾ x 10 ligne (26/0s) movements, Factory No. 6351-.0031, alloy, new in envelope. The 3¾ x 10 ligne movement is Font caliber 59.21 ébauche based so this mainspring will fit movements other than just the specified Elgin, which is part of the reason it says "For Imported Watches". 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