This one I had never seen before. Thanks to Jeff Berman, who generously gave me some old radio-related magazines, I learned about the Selenophon, which is essentially a variable-density paper-strip player (and thus can be called a direct descendant of Léon Scott's 1860 phonoautograph). Built in Austria, it may also be considered a precursor of the later (and much-malighned) 8-track cartridge, since it also carries eight (mono) tracks per side, for a total of 16. Note also the news announcement about the long-playing (LP) record, running at 33 1/3 rpm.
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