Tube Lineup: 12SA7, 12K7, 12SQ7, 35Z5, 50L6
A neat small radio with a streamline design in an "Onyx" beetle plastic cabinet similar to the larger 5D and 6M series. There are four pushbuttons on the top right corner and the airplane dial is surrounded by a brass escutcheon like the 1940 6M series.
For Admiral radios from around this era, the first 3 digits in the model number before the dash is the cabinet color. The 371-5R is walnut brown bakelite, 372-5R is plaskon, and the 373-5R is "Onyx" beetle plastic as shown in my example here. I have also seen this cabinet design used for other brands like Mantola. The chassis model for technical information are the digits after the dash in the model number. The chassis model 5R for this Admiral can be found in the Rider schematics under Continental Radio & Television Corp.