Bulova Factory Buloloy Insertopak Mainspring for caliber 11ABC - Alloy

Bulova Buloloy Insertopak Factory Mainspring for caliber 11ABC and perhaps others, alloy, new in (possibly chipped) package. 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.