Are there vacuum tubes inside the radio? GM had some hybrid radios in the late 50s & early 60s that were tube type, except for the output stage which used Delco either DS-501 or DS-503 germanium transistors. Most used 10 ohm speakers and were VERY sensitive to speaker impedance. Easy to let the smoke out.
I think the very early GM all-transistor radios also used the same germanium transistors.
If I was going to guess, I'd say Corvair bezel on the front.
'57 GMC 102, Original 347 V8, HydraMatic, 3.08 rear gear, added A/C, disk front brakes, HEI, AFB carb, '98 Honda Black Currant paint. T-boned and totaled 10/12
'52 GMC 152 Stake Bed, Original 228, SM420, added A/C, HEI, disk front brakes, '67 Chev 3.55 rear gear. Gets used as a real truck.
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