BESTFIT Mainspring 610H for Culmina 51, 55, Forester 50, 500 & Lang 1021, 1233 - Alloy

BESTFIT Mainspring 610H for Culmina 51 & 55, Parrenin 80, Forester 50, 500 & Langendorf 1021, 1233 caliber movements plus perhaps similar ébauche watches, white alloy. See image for precise characteristics. 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 an adequate job of representing the item.