Vintage Original Genalex Gold Lion KT66 Tubes - Strong Testing Matched Pair - Original Boxes

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This listing is for a pair of original vintage Genalex KT66 Gold Lion Tubes.

This set came to us in original Gold Lion boxes with a piece of matched Gold Lion tape holding the two boxes together!

The boxes show significant shelf wear and one flap has detached, but both contained the original tube data inserts and the tubes are in very good physical condition considering their age.

Both have matched UE date codes.

We tested both tubes on our Amplitrex AT-1000 modern and professional tube tester and both test very strong for both Emission and Gm. They are matched within 5% for emission and within 2% for Gm.

Actual Test Results:
Tube 1: Emission % of NOS Spec 96%, Gm 98%
Tube 2: Emission % of NOS Spec 91%, GM 96%

These results are very close to NOS spec.

It is possible that these tubes were never put into regular service in an amplifier.

The getter flashes are fully intact and the only signs of wear are minor pin corrosion, light lettering wear, and some bubbling of the Genalex Stickers likely due to age (See Images).