IBM 6/430 operator station
IBM 6/430 operator station, with IBM 6/450 monitor unit
IBM Office System 6 information processor, model 6/450, made by IBM c1977-9
IBM 6/430 operator station, with IBM 6/450 monitor unit
IBM 6640 ink jet printer
Documentation for IBM Office System 6 information processor, model 6/450, c1977-9