Matched Pair (2 tubes) of  RWN NEUHAUS EF86 6267 6CF8 tubes.
very high quality tubes
 tubes were made in Germany at the famous VEB Röhrenwerke Neuhaus
am Rennweg (former Telefunken) tube factory 
in 1963 and 1961, code 351352 and 121146 is presented at the both tubes
very high emission, almost perfectly matched.
tube 1 - Ia = 3,4mA 
tube 2 - Ia = 3,8mA 
where 100% for the new tubes is 3mA
  grey round welded plates with two holes, big O-getter.
you will get the tubes you can see at the pictures
Perfect tubes for Neumann U67 microphone, EMI REDD47 mic preamp and other professional audio equipment.
price is for the pair (2 tubes)
I always send the tubes by priority registered mail with tracking number within hours after receiving payment