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ID = 33523
Tube type:  German Military Stamp only 
Identical to Wab

Description W.ab is not the designation of these tubes.
They were manufactured or selected for the former "Luftwaffe" (German Air Force). W.ab stands probably for "Werksabnahme" or "Accepted work for the Army". There is no numbering for W.ab.
More information about these examination stamps is given in this link. If we know more about this particular examination number you will find a forum article below.

We try to show here all different tubes with this paricular W.ab-number. Each picture legend should give information about the actual tube type plus all other markings on that particular tube. We would like to show only one picture for each tube designation if all other markings are the same (incl. Date).
Text in other languages (may differ)
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Wab: Gross klicken - click to big size
Anonymous 15 Collector


You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]