Matched Pair Sylvania 6SN7GTB Black Plate Copper Getter Post O-Getter Made in USA. Fully tested by calibrated Hickok 539C tube tester with no shorts, leakage or gas. Measurement: 3220/3230 3100/3180 where minimum good value is 1640 Tightly matched strong Pair! I will gladly combine shipping upon request. |
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