This little four-valve radio has not yet been identified. I'm hoping that somebody can identify it for me or help me to do so.

It measures 6"deep, 7 high and 10 wide.

The only labels it has on the front is the company name of 'Freed Eisemann' and on the rear of the internal metal chassis is a small metal plate.

The date '6 MAR 1936' is rubber ink-stamped onto the chassis next to the metal plate.

The plate reads:

"LICENSED by radio corporation of america and associated companies only
for amateur, experimental and broadcast reception.
LICENSED by hazeltine corporation, see notice inside
Serial number 69864

121-15 F.M.C. Made in U.S.A."

There is no 'notice' inside and the only other information I can glean is that on the rear of the 5-K speaker chassis is ink-stamped '131 51' and on the front a barely legible date of '27 06 37'.

The valves in order left-right as you look at the rear of the chassis:

Hytron Z5 25
Brimar 43
Hytron 6C6
Hytron 6D6 (which was inside a metal cover)

The volume pot is labelled 138725
The tuning bladed-variable pot has 'Federal Instrument corporation, made in USA, patent pending.' stamped onto it's chassis.

Can you help?