{"product_id":"rare-1920s-qrs-85-mills-rectifier-tube-q-r-s-redtop-tube-cold-cathode-rectifier","title":"Rare 1920s QRS 85 Mills Rectifier Tube Q.R.S. Redtop Tube Cold Cathode Rectifier","description":"\u003cdiv style=\"text-align: center;\"\u003e\u003cspan\u003e\u003cspan style=\"font-family: Arial;\"\u003e(1) 1927 to 1928 Q.R.S. 85 Mills Cold Cathode Tube.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan\u003eBrass Pins with a hot stamped base with embossed logo on the bottom.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan\u003eThe factory stamping on the base didn't penetrate the base all of the way but it is still legible.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cspan\u003eThe base is tight and secure with no looseness.\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan\u003eThis tube is untested. Working condition is unknown and is being sold as-is described and pictured so please assume it to be for display only.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan\u003eInteresting history behind the Q.R.S. 85 Mills tube.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cspan\u003eBecause this filamentless design closely resembled Raytheon's own design, Raytheon filed a patent infringement lawsuit against Q.R.S. in 1927\/28 which was settled out of court. Soon after, Q.R.S. entire tube manufacturing, tooling, patents and inventory was absorbed by Raytheon. This \u003c\/span\u003e\u003cspan\u003ea rare relic from tube radio's earliest days is a great example of that brief period in time.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cb\u003e~ Please view all 7 photos ~\u003c\/b\u003e\u003c\/div\u003e","brand":"Classic Currents","offers":[{"title":"Default Title","offer_id":50735800320255,"sku":null,"price":74.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0788\/5999\/3343\/files\/IMG_7019_7ea3054e-c310-417f-be67-69b3307c46cd.jpg?v=1792529016","url":"https:\/\/classiccurrents.com\/products\/rare-1920s-qrs-85-mills-rectifier-tube-q-r-s-redtop-tube-cold-cathode-rectifier","provider":"Classic Currents","version":"1.0","type":"link"}