Made in East Germany, DDR by RFT factory.
All the tubes was tested. You can see test results below.
Tet results: Ia = 11.0 mA / 9.0 mA (Where 10+/-2 mA = 100%)
Tet results: Ia = 12.0 mA / 10.3 mA Where 10+/-2 mA = 100%)
Tet results: Ia = 8.0 mA / 7.5 mA (Where 10+/-2 mA = 100%)
Tet results: Ia = 13.0 mA / 10.0 mA (Where 10+/-2 mA = 100%)
Tet results: Ia = 9.0 mA / 7.5 mA (Where 10+/-2 mA = 100%)
Tet results: Ia = 9.0 mA / 9.0 mA (Where 10+/-2 mA = 100%)
Tet results: Ia = 8.0 mA / 8.0 mA (Where 10+/-2 mA = 100%)
ATTENTION. I SELL CAREFULLY TESTED TUBES WITH VERY GOOD OR EXCELLENT MEASUREMENT RESULTS ONLY. I DO NOT SELL GARBAGE FROM LANDFILL OR RANDOM TUBES.
DETAILS
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All items are carefully wrapped