The 2310 was an early 'Supertone' amplifier, boasting '7 to 8 watts of undistorted output' from its 'modern metal tubes.' Two inputs, one 'gain' knob, nice red jeweled power indicator. I don't see a power switch, so I reckon power was integrated into the chicken head knob.

This Supertone is remarkably similar to the fancy-grilled 'Oahu' model amp from our friends at Valco.

There was no model number given in the 1938 catalog listing, but the chassis plate shows 'Model 2310' plain as day.