Elgin Factory DuraPower Mainspring for 12s No. 6093 / 2339 - Alloy

Elgin DuraPower Factory Mainspring for 12s movements, Factory No. 6093, alloy, new in likely quite frail envelope. When it's a steel mainspring it's a No. 2339. They come in different strengths and those that I can currently supply are shown in the drop-down list. 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