Comsco Mainspring #1238 for Rockford 6s Factory No. 544 - Steel

Comsco Mainspring #1238 for 6s Rockford, Factory No.544, steel, new in envelope. See images for precise mainspring specifications. A rather hard to find mainspring, although there are substitutes that come relatively close. I specialize in hard to find watch parts and all watch parts are unconditionally guaranteed. Images do an adequate job of representing the item.