Swartchild Black Shield SUPER Mainspring for Gruen 270, Tissot 17/2, Record 50 - Alloy

Swartchild Black Shield SUPER Mainspring for F Gruen 270, Tissot 17/2, Record 50 as well as similar ébauche watches, white alloy. I likely have several of these so the one you get may differ slightly from the images. See images for precise specifications. 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.