Pictures are courtesy of Leonard Arzoomanian who writes:
Years ago I
purchased a UV857 tube from an older gentleman (can’t remember his
name) that he had on display in his collection. The card affixed
to the tube (which I still have) claims it was removed from service on
August 17th 1933 from WTIC. Also that is was one of six of these
tubes used in the rectifier circuit to produce 18,000 volts for the
final stage of the transmitter. It says the price of the tube at
the time was $395. I just came
across your website and thought you might be interested to know that
this tube survived all these years. I collect radios,
specializing in Rhode Island made sets, mostly from the 1920’s and even
though this tube is not from Rhode Island it has been a prized part of
my collection for about 30 years.
