The 57TK is a five tube, single band, AC-DC powered superheterodyne. The cabinet is brown bakelite. The 57TL is the same radio, with a white cabinet.

The tubes used in this set are:

14AQ7   Mixer
14A7 IF Amplifier
14B6 Detector, AVC, 1st A.F. Amplifier
50A5 A.F. Power Output
35Y4 Rectifier