Tru-Power Mainspring U358A for BELFORTE 8B1L, 8B4L, COURT S, TISSOT 19.4-21, FEF 6680- Alloy

Tru-Power Mainspring U358A for BELFORTE 8B1L, 8B4L, COURT S, TISSOT 19.4-21, FEF 6680, BIDLINGMAIER 84 caliber movements and perhaps others as well, alloy, new in envelope. See images for precise 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.