Elgin Mainspring for 6¾ x 8 ligne FF 120, 123 Factory No. 6702 - Alloy

Elgin Mainspring for 6¾ x 8 ligne movements, Factory No. 6702, automatic (tongue) end, alloy, new in envelope. The 6¾ x 8 ligne movements are FF 120 & 123 ébauche based so this mainspring will fit many other movements other than just the specified Elgin, including (according to alternative sources) the UT 543. 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