HR Nivastar Mainspring G294 for AS 495, Enicar 90, Freco 90 F, Gruen 335R, 335SS, 430, 431, 435, 440 - Alloy

HR Nivastar Mainspring G294 for AS 495, Enicar 90, Freco 90 F, Gruen 335R, 335SS, 430, 431, 435, 440 caliber 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 an adequate job of representing the item.