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*

Bid is for one tube,
as pictured.
<<<<<<< As pictured = What you see is what you get >>>>>>>

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Hickok 539B* tested

Test Results
Please refer to title heading

minimum recommended value for a good tube
 54 / 54

(Plate#1 / Plate#2)

*Hickok 539B is a mutual conductance (Gm) type tube tester. It does check for mutual conductance which is a more accurate measure of tube's age.

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