Googled ct-301 grinder. Found something about Knuth.
http://trademachines.com/knuth/ct301
And it's modern brother:
http://www.knuth-usa.com/ds.html
if it runs good, and the wheels are good i would say you got a pretty good deal. the taiwan is better then china and thats where HF is made now, thats in pretty good shape for the age, is there a date on it anywhere