HR Mainspring No. 447 for Bulova 8TA - Steel

HR Mainspring No. 447 for Bulova caliber 8TA plus perhaps other similar ébauche watches, steel, new in envelope. See image for precise characteristics. The 8TA was only made for about a year so the mainspring isn't all that easy to find. I specialize is hard to find watch parts so I usually have whatever you might need and all watch parts are unconditionally guaranteed. Images do a marginally adequate job of representing the item.