Tru-Time Mainspring for Bulova caliber 5AP & 5AE, Aurore 9 - Steel

Tru-Time Mainspring for Bulova caliber 5AP, 5AE and Aurore caliber 9 movements and perhaps others as well, steel, 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 and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.