Matched Quad Western Electric 396A/2C51/5670 Black Plate O-Getter Made in USA. Date Code: 7316, 7526, 7413, 7713 Made in 1973, 1975, 1974, 1977 in USA. Fully tested by calibrated Hickok 539C tube tester with no shorts, leakage or gas. Measurement: 5700/5900 6300/6000 5200/5400 5400/5300 where minimum good value is 3150 Strong and well matched quad! |
|