BESTFIT Mainspring 312C for Otero 25, 251, Tissot 13.6, 15.2, 15.3 - Alloy

BESTFIT Mainspring 312C for Otero 25, 251, Tissot 13.6 (plus many variants), 15.2, 15.3, Forester 620 - 630 caliber movements plus perhaps similar ébauche watches, white 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 is hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a satisfactory job of representing the item.