Availability: 1 In Stock
National - 12AT7 / ECC81 / 6679
NOS National Electronincs, Ribbed Black Plate, Sawtooth, Halo Getter, Made in U.S.A.
This tube tested BETTER THAN NEW with excellent balance between triodes @ 4900/4800
Tested on Calibrated Hickok 6000 Tube Tester
 Shorts |
Filament |
Quality (Good/Bad) |
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Continuity |
Gas Leakage |
Mutual Conductance (New 3000/3000) |
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