Sometimes call the "all american 5" (AA5) it was manufactured from the 1930s on into the 1960s when the transistor replaced tube radios. The circuit design was such that if one tube burn out all the other tubes would fail to work. At the time in many drug stores was a tube tester and you would remove the five tubes from your radio and test all five to find the bad one then buy a new tube (usually a dollar or less per tube) and reinstall the tubes in the radio and it would work.
Another unique item about this type of radio was you could get an electrical shock from them easily. In this time period electrical wiring was not grounded nor were there GFIs, most old farm houses in this area had maybe two electrical outlets per room and if it was a kitchen or bathroom there was a good chance the outlet was next to the sink and the radio was plugged into that outlet. Simply trying to tune the radio to a station with one hand and turning the water on in the sink with the other would produced what today is called a life lesson and back in the 1950s was called "I am never doing that again."