Tubes Vacuum

This Tube has been tested on a Dyna-Quick Model 700 Dynamic Mutual Conductance Tube Tester. All NOS tubes I sell measure 100 % Grid Emission.  The tube in the photograph is the actual Tube in this listing...

These Tubes have been tested on a Dyna-Quick Model 700 Dynamic Mutual Conductance Tube Tester. All NOS tubes I sell measure 100 % Grid Emission.  The tube in the photograph is the actual Tube in this listing...

Sylvania 5U4G Vintage Rectifier Tube 1950s Date Codes NOS in Green Box Tested / Guaranteed   This Tube and all others I sell, have been tested on a B&K Dyna-Quik Model 700 Dynamic Mutual Conductance Tube Tester and tests at or close to a NOS...

Sylvania 5U4GB & 5R4GYB Rectifier Tube Set Ideal for Collins 516F-2 Power Supply NOS Tested / Guaranteed...

Sylvania 5U4GB Vintage 1960s Rectifier Tube NOS in Box Tested / Guaranteed   This Tube and all others I sell, have been tested on a B&K Dyna-Quik Model 700 Dynamic Mutual Conductance Tube Tester and tests at or close to a NOS full Emission /Tube...

NOTE: I only have a small number of these  6883 / 6146 Tubes. At some point the original boxes got damp and were not in good shape. The tubes are in excellent NOS condition This Tube has been tested on a Dyna-Quick Model 700 Dynamic Mutual...

NOTE: I only have a small number of these  6883 / 6146 Tubes. At some point the original boxes got damp and were not in good shape. The tubes are in excellent NOS condition This Tube has been tested on a Dyna-Quick Model 700 Dynamic Mutual...

Sylvania 6BA6 New Old Stock Vacuum Tubes Sleeve of Five  This Sleeve of 5 tubes are new old stock and guaranteed full emission. Shipping is free in the USA

Sylvania 6JB6 for RL Drake Radios, NOS Tested & Guaranteed #2  6JB6 and 6JB6A tubes are interchangeable This 6JB6 / 6JB6A tube is in excellent condition and appears to be NOS,   and tests full grid emission. This tube and all others,...

Sylvania 6JB6 Used for RL Drake Radios, Tested & Guaranteed #1  6JB6 and 6JB6A tubes are interchangeable This 6JB6 / 6JB6A tube is in excellent condition and appear to be used, in excellent condition and and tests full grid emission. This tube...

Sylvania 6JB6 Used Pair (2) for RL Drake Radios, Tested & Guaranteed #01  Sylvanias are the crown jewel for RL Drake Radios!  6JB6 and 6JB6A tubes are interchangeable This Pair of 6JB6 / 6JB6A tubes is in excellent condition and appear to...

Sylvania 6JB6 Used Pair (2) for RL Drake Radios, Tested & Guaranteed #1  6JB6 and 6JB6A tubes are interchangeable This Pair of 6JB6 / 6JB6A tubes is in excellent condition and appear to be used, in excellent condition and and tests full grid...