The Multi-Poducts Company's Multi-Elmac PMR-8 is a 9 tube dual conversion receiver in a very compact package requiring a separate power supply.  If you are viewing this image in 72 dots per inch, the picture is a bit larger than the receiver itself.  Tubes include a 3TF4 filament voltage regulator.  Typically used in mobile service.  Matches the AF-68A transmitter.  Vintage 1960, it covers the 80 to 6 meter hambands as well as the broadcast band.  A review can be found in the January 1963 issue of 73  magazine