[Boatanchors] 30's era tube(s) wanted

[David Stinson]

Don't forget the uber-cool Raytheon RK series.
RK-20A was very popular in the 1930s.
While difficult to find now, the 814 is a near twin to the RK-60, 
save it has a 10 volt filament.
Very nice looking tube and you can mount it horizontally.
A single RK-48 can get you 250 Watts out if you can source
2 KV at 200 mils.  RK-39 is practically an 807 clone and is
in their 1938 Transmit tube manual.
The RK tubes look like they were reverse-engineered
alien tech.  ;-)