Nivaflex Unbreakable Mainspring for Bulova caliber 7AB, 7AE, 7AR, 8AT - Alloy

Nivaflex Unbreakable Mainspring for Bulova caliber 7AB, 7AE, 7AR, 8AT movements plus perhaps other similar ébauche movements as well, white alloy, new in envelope. See images for precise mainspring specifications. 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.