Eighty years ago this month, the young woman shown here was pulling in some musical entertainment on her way to the beach, courtesy of her Majestic model 130 portable radio.  The “camera style” set, billed as the world’s smallest portable, featured a superheterodyne circuit, with a 3-tube lineup consisting of 1A7GT, 1N5GT, and 1D8GT, powered by a 60 volt B battery and a 1.5 volt battery to light the filaments.

The ad here appeared in the June 1939 issue of Radio Today.  You can see a restored example of the set playing at this video: