The Philco model 49-901, "Secretary", was made in 1949 and is a very unusual radio with no dial. A single control knob rolls for on/off/volume and pushes down to rotate thru preset stations. The pilot light changes to a different color for each station.(try the radio above) The chassis is fully enclosed in a hinged case, with preset adjustments available thru access holes on the bottom of the radio. A small color wheel is used to change the colors to the pilot light for different stations. The radio was designed to sit on the floor under a secretary's desk, so they could control the radio with their foot as they typed away.