Hallicrafters S19R receiver.

[jr_tech]

Originally Posted by Ed in Tx

Where does the S20R come in? I have my father's radio, including the original box! Someone once told me the box was probably worth more than the radio.

According to Communications Receivers 2nd edition by Raymond S. Moore :

S19 1938 5 tubes, S19R 1939 to 1942 6 tubes
S20 1938 to 1939 8 tubes, S20R 1938 to 1945 9 tubes

jr