I know there was a thread here a couple weeks ago about old car radios, someone posted a link to some old AK equipment ads. I promised to post a pic of my AK 636. I can't find the thread now, but here's the radio. It's missing the separate speaker and the dynamotor B+ supply. It has 5 tubes or so and they hang upside down inside the box. It's huge, I don't know how they fit it under a dashboard in 1929 or so.