Bulova factory mainspring for caliber 5AB, 5AC, 5AF, 6AL - Steel

Bulova factory mainspring for caliber 5AB, 5AC, 5AF, 6AL, steel, new in sealed envelope. See image for further details. The wonderful thing about factory mainsprings is they always fit! 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.