This is a National T-51 from the early 60s. It was made by the same company that later
changed its name to Panasonic. This is an unusual radio in that it came with an external
antenna that fit into the back of the case. There are two external antenna jacks, one on top
for the included antenna, and one on the side for a long wire. There is a built in antenna,
but the radio works much better with an external one.