RV12P2000 RV 12 P 2000 RFT RWN NEUHAUS / PV1
RV12P2000 tube was widely used in army radios, but also in airborne communication & navigation radios and in the A4 ("V2") missile.
 This HF/VHF tube was developed by the HWA in 1934, readied for production and produced by Telefunken starting mid-1937.  
The P2000 is one of the early miniature-pentodes, with shape and size (but not the internal construction!) very similar to the slightly older SF1 and SF1A. 
the tube was used in:
Lorenz LVA/B30 RV12P2000 amplifier (2 tubes RV12P2000)
Kolibri GW RV12P2000 radio ( 3 tubes RV12P2000)
Neumann m14 microphone among many others
real NOS NIB tubes never used boxed
Tubes are new, never used, untested.
  Made in East Germany at the ex-Telefunken plant Neuhaus  in 1950's
price is for two tubes in original boxes