BESTFIT Mainspring JA552 for 12s Rockford Factory No. 932 - Alloy

BESTFIT Mainspring MS-JA552 for Rockford 12s Movements, Factory No. 932, alloy, new in envelope. See images for precise mainspring specifications. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. Images do a pretty good job of representing the item.