Awesome 1940s MINERVA Caliber 20CH Chronograph Movement for Parts/Repair! Welcome Vintage Watch Lovers.. Recently Acquired from a Watchmaker’s Estate! Which appears to be a Caliber 20CH! This Rare 2-Register Movement Measures Approximately 29mm in Diameter. Comes with Everything Pictured. Appears to be missing a few parts. However, it has a Very Good Balance and will…