{"product_id":"tested-matched-pair-1968-western-electric-415a-tubes-black-plate-codes-6852-6839","title":"Tested Matched Pair 1968 Western Electric 415A Tubes Black Plate Codes 6852 6839","description":"\u003cdiv style=\"text-align: center;\"\u003e\u003cspan\u003e\u003cspan style=\"font-family: Arial;\"\u003eTested Matched Pair of 1968 Western Electric 415A Tubes.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan\u003e\u003cspan style=\"font-family: Arial;\"\u003eDate Codes 6839 and 6852 places the production to July - September of 1968 and October - December of 1968.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan\u003e\u003cspan style=\"font-family: Arial;\"\u003eSimilar to a 6AS6.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan\u003e\u003cspan style=\"font-family: Arial;\"\u003eTubes are closely matched for Gm testing (see below), 1968 date codes and internal structure - they are identical.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan\u003e\u003cspan style=\"font-family: Arial;\"\u003eBlack plates with top square getters.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cdiv\u003e\u003cspan\u003eTested on a calibrated Hickok TV-10 military tube tester\u003cb\u003e\u003c\/b\u003e with \u003cb\u003eno shorts\u003c\/b\u003e and \u003cb\u003eno leaks\u003c\/b\u003e with the following results:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eGm Test = 2500 and 2000 micromhos\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003eMinimum pass\/good = 1540\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cb\u003e~ Please view all 4 photos ~\u003c\/b\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003eGo\u003cb\u003e \u003ca href=\"https:\/\/classiccurrents.com\/collections\/western-electric-vacuum-tubes\" title=\"Western Electric Tubes\"\u003e\u003cstrong\u003eHERE\u003c\/strong\u003e\u003c\/a\u003e \u003c\/b\u003eto shop and explore all of our Western Electric tubes.\u003c\/div\u003e","brand":"Classic Currents","offers":[{"title":"Default Title","offer_id":47625363489023,"sku":null,"price":22.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0788\/5999\/3343\/files\/s-l1600-17_5f8c31a7-a4c6-40f4-9bec-aa92eabae2dc.webp?v=1764875666","url":"https:\/\/classiccurrents.com\/products\/tested-matched-pair-1968-western-electric-415a-tubes-black-plate-codes-6852-6839","provider":"Classic Currents","version":"1.0","type":"link"}