Category:Microphones on stamps
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Media in category "Microphones on stamps"
The following 9 files are in this category, out of 9 total.
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Progress in Electronics 15c 1973 issue U.S. stamp.jpg 1,303 × 842; 372 KB
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Stamps of Germany (DDR) 1961, MiNr 0862.jpg 810 × 694; 389 KB
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Stamps of Germany (DDR) 1961, MiNr 862.jpg 1,526 × 1,304; 215 KB