Stewart-Warner 07-513, 1940
Tube complement: 6A8GT mixer/oscillator, 6K7GT IF, 6Q7GT detector, 25L6GT audio output, 25Z6GT rectifier.
In a novel approach to dial illumination, the clear plastic dial pointer is lit from behind by the pilot light.
Approximately 9-5/8 inches / 24 cm wide.
The back view.
From a 1940 Stewart-Warner brochure.