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Grundig 3160 tube radio restoration, part 6. Selenium rectifier, filter caps and FM alignment. - YouTube
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Sennheiser MDS-1 Stereo Dynamic Microphone 1960s Grundig GDSM200 Fisher Rare Dual MD409 Capsules | Reverb UK
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STEREO Grundig / Sennheiser GDSM 200 + stand vintage microphone (no AKG Neumann Telefunken) | Reverb UK
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industry, radio and TV sets, Grundig plant, Fuerth, production hall for broadcast receivers, visit of British and French specialists, 1950s, Additional-Rights-Clearences-Not Available Stock Photo - Alamy
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