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Supertone Radio Company was in Bristol, RI. A very nicely made set and the only example I have ever seen. It has one Thorandson audio transformer and one unknown stage transformer. Spring mounted sockets. Very high quality all around.
Finally some more information on this one and it was right under my nose!
I believe that the G. P. L are the initials of Granville P Lindley. The connection was discovered in this bankruptcy announcment for a Bristol Rhode Island radio dealer.
Another company, Birstol Radio & Electric Company, has ads in the Bristoll Phoenix starting in March 1926 with reference to Granville P Lindley as propritor.
Bristol Phoenix March 30, 1926
Bristol Phoenix April 2, 1926
April 6, 1926
April 9, 1926
April 20, 1926
April 23, 1926
April 27, 1926
April 30, 1926
By right under my nose I mean Granville P Lindley was an engineer at Coto-Coil and the (Lead Engineer of the Byrd Expedition II) and Lewis Bellem (1BES). Lindley and Bellam were also responsible for bringing Radio Equipment to Pitcairn Island in the South Pacific made famous by the landing place of the mutineers from the HMS Bounty. The island, cut off from the rest of the world since 1790, received a modern short-wave receiver and a 60-watt transmitter in 1938. The equipment was made possible by the generous donation of material and labor of many amateurs and manufacturers under the instigation of the Coto-Coil Company.
Lindley was born In 18911 in Connecticut. In 1915 he took the Minnie V Pope2 for a test run, of which he was part owner.
The Boston Globe February 7, 1915
In 1933 Lindley leaves Boston Harbor on board the Ruppert as part of the Byrd Expedition II to the Antarctic. One of 3 Rhode Islanders on the expedition
Lindley arrived back in New York on April 9th, 1934
