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

$22.99 USD

Both sections have identical test results using Hickok 752A. They have the same QO code.I believe th..

$29.99 USD

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

$149.99 USD

This is a pair of NOS vacuum tubes designated "RB" and made in the USA.Tested on a Hickok Model 752A..

$89.99 USD

Tube #1 tested 300/300 Tube #2 tested 325/325 on Hickok 752A, minimum is 200. The 752A gives a ..

$39.99 USD

Tested 600/675 mhos on Hickok 752A, minimum new is 475Both have Philips date codes. Gray plate and t..

$27.99 USD

Pre-owned tubes tested on Hickok 752A. Pentode tested 650 and 600, min 500Triode sections tested 700..

$24.99 USD

Used tubes from same audio channel, made in Germany. Results from test on Hickok 752A: 7000/725..

$44.99 USD

NOS matched pair tubes made in USA and branded Continental on the base. Both tested 1000/1000 on a H..

$49.99 USD

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