Marco Mainspring #3221 for Frey 30, Precimax 600, Certina 15-021, Record 75, 102, Kurth 220 - Steel

Marco Mainspring No. 3221 for A. Michel 600, 624, 627, Frey 30, Precimax 600, Certina 15-021, Record 75, 102, Kurth 220 caliber movements, and perhaps others, steel, 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 a pretty good job of representing the item.