This is a tiny five tube set in a cabinet created from what we now call "beetle" plastic. Firestone's name for this plastic was "Marbalin" (click the ad icon to see the Marbalin ad). This is a very uncommon little radio, and being beetle plastic makes it quite valuable.
Essentially the same radio as above, but priced $3 higher, due to the Marbalin plastic. The photo is a contributed item from an e-Bay auction.