Bulova Factory Mainspring for caliber 10BAC - Steel

Bulova Factory Mainspring for caliber 10BAC, steel, new in sealed envelope. See image for further details. The wonderful thing about factory mainsprings is they always fit! That said, the Bulova 10BAC was based on the ETA 926.  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.