Sandsteel Sandalloy Mainspring S3244 for Gruen 211, 270, 271, 455, 457, 458, 459, 270SS, 271SS, Omega R13.5 - Alloy

Sandsteel Sandalloy Mainspring S3244 for Bulova 7AT, 7T, Croton L32, Gruen 211, 270, 271, 455, 457, 458, 459, 270SS, 271SS, Omega R13.5, Tissot 17.2 caliber movements, plus perhaps similar ébauche watches, alloy, new in envelope. See images 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 barely adequate job of representing the item.