BESTFIT Mainspring 611H for Lang 1036, 1136, MST 371, 372, Oris 450, Reconvelier 120 - Alloy

BESTFIT Mainspring 611H for Langendorf 1036, 1136, MST 371, 372, Oris 450, 451, 452, 453, 459, NPX 400, 450, Wittnauer 11 RW, Benrus DT, Forester 800 & Reconvelier 120 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 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.