Elgin Factory Mainspring for 11½ ligne Grade 627 - Alloy

Elgin Factory Mainspring for 5/0s (11½ ligne) movements, specifically Grade 627, Factory No 6612, alloy, new in envelope. The 11½ ligne movements are AS 1396 ébauche based so this mainspring will fit movements other than just the specified Elgin. See image for further details. This mainspring was available in a couple of different strengths and those that I can supply can be found in the sdop-down list. 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