Bulova Factory Mainspring for caliber 6R - Steel

Bulova Factory Mainspring for caliber 6R plus the many variants of that and perhaps even more similar ébauche watches, new in open envelope, steel. 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.