"KTM" is the abbreviation for "Katsumi," but it looks more like a Kumata model (which would be KMT). Probably a Hallmark import (apparently I can't read),so expect to have to do some work to get it running well or quietly. The motor will probably be very weak with age, and if it has all brass gearing, it will be loud (and if it has plastic gears, expect them to be cracked).