Didn't know Minerva still made their own hairsprings. Thanks to @JasonHeaton, now I do. In Villeret with @GearPatrol
Redirecting to http://gearpatrol.com/2014/01/28/photo-essay-minerva-watch-manufacture/
Redirecting to http://gearpatrol.com/2014/01/28/photo-essay-minerva-watch-manufacture/