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During WW II German Post was
under complete Wehrmacht control so any power tubes used by German Post could be considered Wehrmacht tubes. Three tubes with black bases are
(left to right) RV 271 A triode, RS 291 tetrode and
RS 282
triode. The tube in front of RS 291 is RV 278 triode. All the tubes
in this display were made by Telefunken.
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