Tru-Time Mainspring for Bulova caliber 6AP, 6B, 6P - Steel

Tru-Time mainspring for Bulova caliber 6AP, 6B, 6P and quite likely others, steel, 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 suitable job of representing the item.