He's Wearing A Wire!" Minifon's Spy Watch Is Some Real 007 Stuff | TechCrunch
Minifon portable wire recorder: close-up of take-up spool - Playback and recording equipment - Radio and sound recording history | British Library - Sounds
Protona Minifon P-55
Protona Minifon P-55
Minifon Pocket Wire P-55 Kit
Minifon P55 Tape Recorder | Reel to Reel
Protona Minifon Special
Minifon Portable
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Protona Minifon Attaché
Minifon P55 Tape Recorder | Reel to Reel
Minifon portable wire recorder: route of wire around recorder - Playback and recording equipment - Radio and sound recording history | British Library - Sounds
Cold War Espionage & the 1950s Minifon Wire Recorder – historictech
Vintage Minifon Protona Mi-51 Spy Recorder and Microphone Wristwatch working | eBay