HR Quick Fit Mainspring K398 for Felsa 177, Alpina 590, Bidlingmaier 104 - Alloy

HR Quick Fit mainspring No K398 for  Felsa 177, Alpina 590, Bidlingmaier caliber movements plus perhaps other watches as well, alloy, new in envelope. See images for further data and 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.