The product is a rare pair of Raytheon & RCA CRP-5814WA/12au7 black plates triple mica tubes. These vintage tubes are made in the United States and have a unique design that sets them apart from other tubes in the market. The 12Au7 type and triple mica construction make them highly sought after by collectors and enthusiasts of vintage audio equipment. With their brand history and specific model number, these tubes offer a piece of nostalgia and potential enhancement to any audio setup.
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