The little triangles on the dial at 640 and 1240 Khz were the symbols for CONELRAD. This was an FCC mandated program for the cold war. All radios manufactured between 1953 and 1963 had to have those markings. That narrows it down a bunch. There should be date codes on the tubes or transistors if there is anything original in it. Craig
There should be a model number stamped into the case.
Greg
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