Matched Quad [4 tubes] of original

Tesla E88CC

great sounding ECC88 6922 6DJ8 E88CC family tubes

Tubes are probably new, not used, tested NOS. same code.
Made in Chechoslovakia in February 1972 according to "AY" code
come from large military stock, no boxes
frame grid, box anodes with the grey shield, yellow print
these are 32 coded famous VRCHLABI factory Czechoslovakia
there is almost always the possibility that the tubes were used for a while, but I'm pretty sure that the tubes were never used, NOS
test strong, look great, came from huge military stock.

almost perfectly balanced and matched,  high emission
 test results:
tube1 - 18mA/18mA
tube2 - 18mA/18mA

tube3 - 17mA/19mA
tube4 - 19mA/19mA
where new tubes should test 14mA
Same code "AY" February 1972
Tested in High End preamps. Tubes sound very warm (real tube sound), a lot of details in the mid, 

silky pleasureful highs, soft non aggressive lows, rich soundstage with 3D effects.

my perception of the tubes sound is subjective ofcourse (based on my personal experience and feelings)

I have a lot of ECC88 family tubes and Tesla E88CC gold pins from 1970's are one of the warmest and delightful tubes I've heard.
price is for the pair (2 tubes)
no individual boxes this time
I always send the tubes by priority registered mail with tracking number within hours after receiving payment