WATCH-CRAFT Mainspring 3818W for Benrus BA, BB, CK, CKSS, Eterna 956, Phenix 130, 132, 135, Helbros 660 - Alloy

WATCH-CRAFT Mainspring 3818W for Benrus BA, BB, CK, CKSS, 6/0s Central, 7¼ ligne Central, Eterna 956, 966, 967, 968, 969, 970, 1020, Phenix 130, 132, 135, Helbros 660 caliber movements, plus many similar ébauche movements, 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.