BESTFIT Mainspring WA8 for Seiko Sportsmatic Automatic - Alloy

BESTFIT Mainspring with attached bridle WA8 for Seiko Sportsmatic automatic movement plus perhaps similar movements, white alloy, new in envelope. See image for precise mainspring specifications. I likely have several of these so the one you get may differ slightly from the images. I specialize in 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.