Matched PAIR (2 tubes) of original genuine Tesla ECC83.
These are extremely rare original Tesla tubes from Vrchlabi factory early 1960's
dome top tubes from January and February 1961
1950's tube construction with foil getter
Tubes seem to be not used, or used slightly tested very strong.
There is almost always the possibility with the old production tubes that they were used for a while,
but I'm pretty sure that the tubes are new, never used - look great, test strong
 very closely balanced and matched, very high emission
 tube1: Ia = 2.1mA/1,9mA
 tube2: Ia = 2,0mA/1,8mA
(where NOS tubes should test 1,2mA=100%)
grey winged plates with the holes, foil getter
 Made in Chechoslovakia in January 1961 ("WE" code) and February 1961 ("WF" code) VRCHLABI plant
sorry, no boxes this time
you will get the tubes you can see at the picture.
price is for the matched pair (2 tubes)
I always send the tubes by priority registered mail with tracking number within hours after receiving payment

                                                                                                                Santic [feat. Vera Hall] – Trouble So Hard