{"product_id":"rare-museum-piece-1920s-gec-at40-radio-valve","title":"RARE MUSEUM PIECE 1920'S  GEC AT40 RADIO VALVE","description":"RARE MUSEUM PIECE 1920'S  GEC AT40 RADIO VALVE Boxed vintage collectors item\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003ctable border=\"0\" cellpadding=\"2\" cellspacing=\"0\" width=\"100%\" style=\"font-family: Helvetica, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 238);\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\u003ctd valign=\"top\" style=\"font-size: small;\"\u003e\u003ctable border=\"0\" cellpadding=\"0\" cellspacing=\"0\" class=\"subTbl\" style=\"margin-bottom: 5px;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"label\" style=\"font-weight: 700; padding: 0px 10px 0px 0px; vertical-align: top;\"\u003eube type: \u003c\/td\u003e\n\u003ctd\u003eTransmitting Triode, air cooled   Power\/Output \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd style=\"color: rgb(143, 95, 0);\"\u003e\u0026lt;1925 very rare. ***\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"label\" style=\"font-size: small; font-weight: 700; padding: 0px 10px 0px 5px; vertical-align: top;\"\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003ctd style=\"font-size: small;\"\u003e\u003cspan style=\"font-size: larger; font-weight: bold;\"\u003eAT40\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"label\" style=\"font-size: small; font-weight: 700; padding: 0px 10px 0px 5px; vertical-align: top;\"\u003eSimilar Tubes\u003c\/td\u003e\n\u003ctd style=\"font-size: small;\"\u003e\n\u003cdiv class=\"bold\" style=\"font-weight: 700;\"\u003eOther base and data slightly different:\u003c\/div\u003e  \u003ca href=\"https:\/\/www.radiomuseum.org\/tubes\/tube_at40_uv.html\" target=\"_blank\"\u003eAT40_UV\u003c\/a\u003e ; \u003ca href=\"https:\/\/www.radiomuseum.org\/tubes\/tube_vt15_gpo.html\" target=\"_blank\"\u003eVT15_GPO\u003c\/a\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"label\" style=\"font-size: small; font-weight: 700; padding: 0px 10px 0px 5px; vertical-align: top;\"\u003eFirst year\u003c\/td\u003e\n\u003ctd style=\"font-size: small;\"\u003e\n\u003cspan style=\"font-size: larger; font-weight: bold;\"\u003e1922 \u003c\/span\u003eSaga of the Vacuum Tube, Tyne Seite 381\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"label\" style=\"font-size: small; font-weight: 700; padding: 0px 10px 0px 5px; vertical-align: top;\"\u003eFirst Source (s)\u003c\/td\u003e\n\u003ctd style=\"font-size: small;\"\u003e1921 : British Radio Valves - The Vintage Years: 1904-1925 p.77\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003chr class=\"rmBB\" style=\"background-color: rgb(0, 0, 0); border: 0px solid rgb(0, 0, 0); height: 1px; font-family: Helvetica, Verdana, Arial, sans-serif; font-size: small;\"\u003e\n\u003ctable border=\"0\" cellpadding=\"2\" cellspacing=\"0\" width=\"100%\" style=\"font-family: Helvetica, Verdana, Arial, sans-serif; background-color: rgb(255, 255, 238);\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" style=\"font-size: small;\"\u003e\u003cb\u003eBase\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\" style=\"font-size: small;\"\u003e\u003ca href=\"https:\/\/www.radiomuseum.org\/forum\/4_stift_europasockel_b4_von_1914.html\" target=\"_blank\"\u003eEurope 4-Pin B4 (Eu A, E, 4A) 1914\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" style=\"font-size: small;\"\u003e\u003cb\u003eWas used by\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\" style=\"font-size: small;\"\u003eMilitary and\/or Government\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" style=\"font-size: small;\"\u003e\u003cb\u003eFilament\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\" style=\"font-size: small;\"\u003eVf 7 Volts \/ If 1.5 Ampere \/ Direct\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003c\/div\u003e","brand":"GEC","offers":[{"title":"Default Title","offer_id":62657644822915,"sku":"AT40","price":995.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0593\/6434\/3989\/files\/57_03a2f2ff-9a23-40e8-b774-ba87df0dc1dd.png?v=1789753614","url":"https:\/\/itregeneration.net\/products\/rare-museum-piece-1920s-gec-at40-radio-valve","provider":"IT Regeneration","version":"1.0","type":"link"}