BESTFIT Mainspring 515C for AS 976, 1012, Bulova 5AB, 5AC, 6AL - Alloy

BESTFIT Mainspring 515C for A.S. 976, 1012, Benrus Q & Bulova 5AB, 5AC, 6AL plus perhaps similar ébauche watches, white alloy. I've seen it noted that it will also fit an Elgin grade 700. See image for precise characteristics. I likely have several of these so the one you get may vary 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.