OK,  Digging thru my tubes, I found this very nice single Ken-Rad 5U4G tube, made for the US Navy in 1943.  

It is NOS with original box, base is tight, glass is clean, no loose particles.  Pins were bright and shiny, but I polished them anyway and treated with Caig Progold.

Tested on a state of the art Amplitrex, the sections are matched within 8%, and it tests above, average NOS readings.

Sonics are as good (or better) than 40's RCA 5U4G's.  Sound is perhaps a bit more forward, bass slightly deeper.

Price is $35 plus $7.00 for Priority Mail shipping.  I pack very well, no problems there.  

Payment by Paypal, US sales only.  If not satisfied, you can return it for full refund (within 7 days).

Thanks for looking!
Mike