Mullard 12AU7/ECC82 17 mm Long Plate Dual Post (Goalpost) O-Getter Made in 1958 in England. Very Rare 17mm Long Plate Dual Post O-Getter Version. Made very early in 1958. Date Code: k61 B8B Made in February 1958 in Blackburn England. Fully tested by calibrated Hickok 539C tubes tester with no shorts, leakage or gas. Measurement: 2880/2940 where minimum good value is 1950 Very strong! Tightly balanced triodes! Tested in my preamplifier to make sure working as intended with no issues at all. I will gladly combine shipping upon request.
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