Made in I 1974 (50 years ago) on Saratov Plant, USSR. VERY GOOD BALANCED TUBES. STRONG MATCHED.SAME BATCH. ONE OF THE MOST WANTED YEAR!
All tubss are from my own tubes collection and tested.
Test results: Ia1 14.5 mA - 13.9 mA / Ia 12.5 mA - 13.0 mA (Where 10 mA is 100%)
ATTENTION. I ONLY SELL CAREFULLY SELECTED TUBES FROM THE SAME YEAR OF MANUFACTURE WITH VERY GOOD OR EXCELLENT MEASUREMENT RESULTS. I DO NOT SELL GARBAGE FROM LANDFILL OR RANDOM TUBES.