We have people from all walks on this forum, that I thought might be interested to see this. I dad was cleaning out his basement and asked me if I wanted this old ham radio. He said he played with it a little and it worked fine. My dad has been in electronics work and play, all of his life. He has a lot of stuff he is throwing away. The serial number was 1939. He thought that was the year it was made. Anyway I checked it up. Model Airline Special W-4 Tri-City Radio Supply Co. Davenport, Iowa. It was built for Montgomery Wards. Year 1923 Wards W-4. It needs 2 batteries to make it work. I found the schematic on line, but there where no pictures of it.