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Pentodes tested 1125 & 1225. Triodes 1225 & 1400 µmhos on a Hickok 752AMinimum would be 700 ..

$22.99 USD

Tested new at 1425, minimum 675 µmhos on Hickok 752AGrey plate with halo getter and reinforced rod.&..

$7.99 USD

Tested strong at 1225, minimum 675 µmhos on Hickok 752AGrey plate with halo getter. ..

$5.99 USD

Tested 650 & 625. Minimum 350 & 275 µmhos on a Hickok 752AMinimum would be 350 & 225. Bl..

$16.99 USD

Tested 900 and 875 µmhos respectively on a Hickok 752A where minimum is 500 ..

$149.99 USD

NOS brown base vacuum tube with black plate made by SylvaniaTested 750 on Hickok 752A, where minimum..

$69.99 USD

Tested 375/400 on Hickok 752A where minimum is 200. The 752A is noted for giving a low reading ..

$19.99 USD

Tested using Hickok 752A ..

$19.99 USD

Gray plates and halo getter. Tested like NOS using Hickok 752APentode 1150, minimum 700. Triode 1075..

$16.99 USD

These are closely matched NOS vacuum tubes. Tested 725/750 min 500and 625//725 min 475 µmhos respect..

$9.99 USD

Tested NOS and balanced at 3400/3400 on Hickok 752A. Minimum is 1600/1600 Sylvania Internationa..

$59.99 USD

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