This radio is a five-tube, single band superheterodyne

The models in this series are: E-90WE, E-90CE, E-90GY, E-90RD, E-90BK.

The tubes used in this radio are:

12BE6 Converter
12BD6 I.F. Amplifier
12AT6 Detector, AVC, 1st. A.F. Amplifier
35W4 Rectifier