BESTFIT Mainspring 412C for NPX 600, Bulova 4AD, Peseux 10, 120, 130, Benrus H - Alloy

BESTFIT Mainspring 412C for NPX 600, Benrus H, Bulova 4AD & Peseux 10, 120, 130 caliber movements plus perhaps similar ébauche watches, white alloy, new in envelope. See images for precise mainspring specifications. I likely have several of these and the envelopes look slightly different but they are all the same mainspring. 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 an adequate job of representing the item.