Ultra rare 1959 "A"NOS PHILIPS AMPEREX GZ34 5AR4 double D GETTER f33 SMOOTH PLATE from SITTARD made ! PERFECT balance super strong Miniwatt label like Mullard

Very happy to be able to propose you for sale this awesome and super rare early "A"NOS, almost new, Philips Amperex Sittard GZ34 5AR4 super strong and perfectly balanced. Miniwatt label.

Tests results 104 % 104 %

Code f33 X9J

It's the ultra rare and highly sought after Sittard made model with X code, f33 version, with smooth plate, double D getter and brown base. This tube was made in the great factory of Sittard in Holland during October 1959.

This particular model is highly sought after ( especially by audiophile because many of them find them to behave and respond in a very similar way as the earlier and far more expensive 50's metal base models ) So expect to get the very best of your power stage.

This tube has splendid wide, shiny mirror like getter flash.

The white label is still very nice date and factory code are perfectly intact.

Not sure if it had some use, in perfect top condition.
Sold as very few use.

Super strong and can't be better balanced.

 No short
 No leaks  no issue                      
  I COMBINE SHIPPING ,

  SO PLEASE HAVE A LOOK AT MY OTHER ITEMS AND SAVE .

  Fully tested on Jackson 648S for

Filament

Circuit

Shorts

Plate

Life test...

The Jackson 648. It is definitely one of my favorite tube testers. While it does not employ a mutual conductance test circuit, it does use an advanced emission circuit that applies separate element voltages to each tube element, and separate load circuits are also used. “These voltages and loads have been carefully selected for each tube to meet most ideally the normal operating condition of the tube.” (Source: 1950 Jackson catalog.)

In my experience, the Jackson circuitry is very effective, and often will surprise you with accuracy that approaches Hickok’s coveted “mutual conductance” test method. ( Source tubesound web site.)

I do my best to test and describe the tubes the best I can.

Note that test results may vary from one tester to an other so this must be taken as an indication, although my Jackson is regularly tested for calibration.

 Photos are part of the description you get what you see.

Thank you for your interest