Silvertone 6107, 1939
This four-tube TRF design works pretty poorly. Tube complement: 6K7 RF, 6J7 detector, 25L6 audio output, 25Z6 rectifier.
Approximately 6-1/4 inches / 16 cm wide.
This radio is practically identical to my Silvertone 6197, but is part of a different model-number series that uses a different chassis. (The chassis difference is small, however. This set uses a 6J7 detector tube, while the 6197 uses a 6F5.)
A 1939 Sears catalog reveals that this adorable little radio was available in three other colors: black (model 6106), "walnut" (model 6108), and red (model 6116).