Dynaflex Unbreakable Mainspring for Bulova 7AH, 7AK, 7AP - Alloy

Dynaflex Unbreakable mainspring for Bulova caliber 7AH, 7AK, 7AP plus perhaps other similar ébauche movements as well, alloy, new in envelope. See images for further data and 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.