Philips 7591 Vacuum Tube Beam Power Tube Made in Japan

Tested 8250 µmhos on Hickok 752A. Minimum is 5000µmhos. ..

$34.99 USD

Philips 8438 Power Tetrode Vacuum Tube

The tube is in good physical condition, but shows signs of use.** It is untested ** ..

$134.99 USD