W41187 Auto Expressionator tube
For Sale: very rare W-41187 Auto Expressionator tube. $95 + postage. This is an extremely rare tube that goes into the output stage a few 1930s Crosley round-dial console radios and in theory works as a “sound expander” to colorize the sound. Good continuity, tight base, polished pins. Try to find another one! This is the only one I have ever owned in 18+ years in the radio collecting hobby.

W-41187 Auto Expressionator Tube



For Sale: $600 for this LOT of 6 Telefunken 12AX7 ECC83 17mm Long Smooth Plates Tubes, Made in Germany. Used, but Top Quality. All test excellent, very close to new. Characteristics of all six tubes: Made in Germany, Diamond bases, Long 17mm perfectly smooth plates, Top round getter, the first five tubes have “4 ribs on top of glass envelope”; the sixth tube (diamond base code 12,2) has a smooth top glass envelope, there is no silkscreening left on any of the tubes, new white boxes will be supplied for professionalism, and each box will be labeled and test scores recorded.
For Sale: Sylvania #50 engraved-base Audio Triode tube, TESTS NEW. Truly a beautiful tube, Made in USA, Sylvania engraved-base, ST-glass, Black Plate, clear-top, large solid square getter. Nice and clean, shiny flashing, shiny pins, no visible plate wear. Awesome.

