My father, who died almost a year ago, did computers and telephone related work from the 1950's until his retirement. Among the instruments he left behind is a DB25 RS232 debugger. I know some of you here still use rs232 interfaces for data logging. If someone here would like to have the easy BOB, send me a PM.
It's complete with carrying case and owners use manual. It uses 2 common 9v batteries to operate.