{"product_id":"1-tested-sylvania-2d21-tube-with-box-date-code-722-tetrode-thyratron-tube","title":"(1) Tested 1957 Sylvania 2D21 Tube with Box Date Code 722 Tetrode Thyratron Tube","description":"\u003cdiv style=\"text-align: center;\"\u003e\u003cspan\u003e\u003cspan style=\"font-family: Arial;\"\u003e(1) Tested Sylvania 2D21 Tube with Box.\u003c\/span\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cspan\u003e\u003cspan style=\"font-family: Arial;\"\u003eDate Code 722 (22nd week of 1957).\u003c\/span\u003e\u003c\/span\u003e\u003cspan\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cstrongr\u003e\u003c\/strongr\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cspan\u003eTested on a calibrated Hickok TV-10 military tube tester with \u003cb\u003eno shorts\u003c\/b\u003e at 1025 where 800 is minimum pass\/good.\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\u003e\u003cb\u003e~ Please view all 6 photos ~\u003c\/b\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Classic Currents","offers":[{"title":"Default Title","offer_id":48237901086975,"sku":null,"price":7.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0788\/5999\/3343\/files\/IMG_9199.jpg?v=1772580116","url":"https:\/\/classiccurrents.com\/products\/1-tested-sylvania-2d21-tube-with-box-date-code-722-tetrode-thyratron-tube","provider":"Classic Currents","version":"1.0","type":"link"}