Tru-Temper Mainspring for Bulova 10BS & 10BC + A.S. 1200 series Movements - steel

Tru-Temper Mainspring for Bulova 10BS & 10BC as well as A.S. 1200, 1201 & 1202 caliber movements, steel, new in envelope. See images for mainspring specifications. 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.