Mullard 12AT7/ECC81 Square Getter Copper Post Made in England. Labeled as Rogers. Red painted tip indicates special selection. Date Code: Tk1 R1A2 Made in January 1961 in Mitcham England Fully tested by calibrated Hickok 539C tube tester with no shorts, leakage or gas. Measurement: 1600/1450 where minimum good value is 2500 This tube measures low, but works well in my preamp with no issues. |
I will gladly combine shipping upon request. |
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