The Emerson Mickey Mouse 411 was first introduced in 1933 using the Emerson A-4 chassis.
It used a 4 tube line up of 78,6F7, 38 and 1V.
Later, in 1936, the radio was issued with an Emerson U4C chassis using the same model number.
The 2nd chassis tube line up was 6D6, 6C6, 43 and 25Z5 and the radio came with bakelite knobs.
This example uses the earlier A-4 chassis that also had the earlier wood knobs
with the Emerson clef logo engraved in them.
The front included metal escutcheons behind the knobs and a "Emerson, Mickey Mouse, Walt Disney" nameplate.
Both releases used the same cabinet, with 4 different Mickey Mouse 3D images.
They were pressed into 4 separate panels in what is referred to as repwood.
The front Mickey Mouse image shows him playing a cello, the top shows Mickey playing a piano,
the right side he's playing a flute and on the left, a tuba. (click the images for a close up)
Emerson made another Walt Disney 3D repwood radio, the "Snow White"
.
In the late '30s, Australian Radio maker Astor also released a Mickey Mouse radio, the model BP shown below.
The licensing for the Australian Mickey Mouse radio was contested by Walt Disney and production was forced to stop,
but they continued selling the radio without Mickey on the dial and chassis, but "ASTOR Mickey Mouse" was still embossed into the bakelite cabinet.
This article from the October 1933 Radio Retailing magazine tells of
Walt Disney's exclusive licensing agreement with Emerson Radio & TV.