Elgin DuraPower Factory Mainspring 6693 for 700 series movements - Alloy

Elgin Factory DuraPower Mainspring Factory No. 6693 for 700 series Elgin movements, alloy, new in envelope. Available in at least 3 strengths, which you'll be able to select the one you want from the drop-down list. See image for specifications. I likely have several of these so the actual one you receive may differ slightly from the image. 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