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Optonica - Wikipedia
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1970s Optonica The Optimum CP-5151 3 Way Speakers 2 Sided Page Brochure Flyer | eBay
Optonica - Wikipedia
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Optonica CP-2525 Speaker-P Sharp; Osaka, build 1978/1979, 1 pictures | Radiomuseum
Optonica CP-7100HW Speaker-P Sharp; Osaka, build 1981, 1 pictures | Radiomuseum
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Optonica CP-5100HW Speaker-P Sharp; Osaka, build 1982, 1 pictures | Radiomuseum
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Optonica SM 3000 amplifier. Classic Vintage. Fully revitalized.
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