Bulova Factory Mainspring for caliber 10AK - Steel

Bulova Factory Mainspring for caliber 10AK, steel, new in sealed envelope. See images for further details. Commonly found in military watches and elsewhere.  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.