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NOS Pair Westinghouse 12BY7A Black Plate Vacuum Tubes Tested GOOD Hickok 800 USA
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biggestbillsfan
1,528 ratings · 99.60% positive
Description
From the sellerTube Type: 12BY7A / 12BY7. The 12BY7A is a premium high-transconductance beam power tube commonly used in Each tube has been individually tested on my Hickok Model 800 Mutual Conductance Tube Tester.
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