Mullard 12AT7/ECC81 O-Getter Copper Getter Post Made in Blackburn England. Labeled as Philips. Date Code: Vf3 B4E1 Made in Blackburn England Fully tested by calibrated Hickok 539C tube tester with no shorts, leakage or gas. Measurement: 3400/4200 where minimum good value is 2500 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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