BESTFIT Mainspring WA4 for AS caliber 1635 & Elgin grade 852 Automatic - Alloy

BESTFIT Mainspring WA4 for AS caliber 1635 Automatic with attached bridle, white alloy. See image for precise mainspring specifications. Also fits the Elgin Grade 852. I likely have several of these so the one you get may differ slightly from the images. specialize is hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.