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Large Globe 50 Triode Vacuum Tube with Mesh Plate. Brand unknown, there are no markings visible on the globe or the base. It looks like a 50 & tested like a 50 in 30 min test. The minimum "Good" value for a type 50 tube on my calibrated TV7 is 38, this tube tested at 52 which would indicate that it's a strong #1 used tube. Item #91206

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