BOREL Mainspring A5519-O for Bulova caliber 9ASC automatic - Alloy

BOREL Mainspring A 5519-O for Bulova caliber 9ASC automatic movements (with attached bridle) plus perhaps similar ébauche watches, white alloy. 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.