Bulova Factory Mainspring for caliber 6AN - Steel

Bulova Factory Mainspring for caliber 6AN and perhaps other similar ébauche watches (including other caliber Bulova), steel, new in sealed envelope. See images for further details and any other supported calibers. 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 an adequate job of representing the item.