HR Nivastar Mainspring G625 for AS 964, 1023, Kurth 340, 350, Bulova 7AD, 7AM - Alloy

HR Nivastar mainspring No G625 for Kurth 340, 350, Bulova 7AD, 7AM and AS 964, 1023 plus perhaps similar ébauche movements as well, alloy, new in envelope. See images for further data and 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 satisfactory job of representing the item.