w Kern Switar 50mmF/1.8 w/o shutter bulge which were made 1,526 from 1951 to 1955 Five samples > https://pbase.com/kkawakami/image/149708955 Also with Kern Macro Switar 50mmF/1.9 + Speed booster Six samples > https://pbase.com/kkawakami/image/149860838