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Matched Pairs, Like New BRIMAR T-Series 6060, Premium 12AT7 Black Plates Tubes. Brimar CV4024 12AT7WA - MINT NOS Late 1960s-Early 1970s Black Plate Military Stock ECC81/12AT7 - (M.Pairs/Quads/Singles) - SAME AS Brimar 6060 Single Tubes, Like New BRIMAR T-Series 6060, Premium 12AT7 Black Plates Tubes. BVA Logo, Made in England.
10 540 10A
Brimar CV4024 12AT7WA - Single Tubes MINT NOS NIB 1965-66 Black Plate Military Stock ECC81/12AT7 - SAME AS Brimar 6060 - IMPERFECT SCORES Brand New MINT NOS NIB Rare 1970-71 BRIMAR CV4033 Black Plate Military tubes. CV4033 Flying Lead is Premium Grade, High Reliability Long Life version of CV4024/6060/ECC81/12T7 valves. STC Rochester Plant Date Codes. Made in England. Brand New MINT NOS Rare 1960-62 BRIMAR CV4033 Black Plate with Copper Grid Post Military tubes. Factory tested/serialized*. CV4033 Flying Lead is a Prem Grade, High Reliability Long Life version of CV4024/ECC81/12AT7. STC Rochester Plant England. IMPERF
940-IMP 2040M 2042MI
Brand New MINT NOS NIB Rare 1970-71 BRIMAR CV4033 Black Plate Military tubes. CV4033 Flying Lead is Premium Grade, High Reliability Long Life version of CV4024/6060/ECC81/12T7 valves. STC Rochester Plant Date Codes. Made in England. IMPERFECT TEST SCORES. Like New, lightly used Rare 1960s BRIMAR 13D9 Industrial grade with Black Plate and Copper Grid Posts  with BVA logo. 13D9 is a Special Grade Variant of CV4024/ECC81/12AT7 valves. STC Rochester Plant Date Codes are faint and painted on instead of etching Like New, lightly used Rare 1960s BRIMAR 13D9 Industrial grade with Black Plate and Copper Grid Posts  with BVA logo with IMPERFECT GETTER FLASH. 13D9 is a Special Grade Variant of CV4024/ECC81/12AT7 valves. STC Rochester Plant Date Codes.
2040M-IMP 1131 1131-G
Like New, lightly used Rare 1960s BRIMAR 13D9 Industrial grade with Black Plate and Copper Grid Posts  with BVA logo with IMPERFECT TEST SCORES. 13D9 is a Special Grade Variant of CV4024/ECC81/12AT7 valves. STC Rochester Plant Date Codes. Matched Pairs MINT NOS NIB Sylvania 1960s 12AT7 Black Plate Tubes with Halo Getter, Westinghouse Label. Tubes are earlier production labeled and packed by Westinghouse a few years later. Matched Pairs MINT NOS NIB TUNG-SOL 1960s 12AT7 Gray Plate Tubes with Halo Getter Westinghouse Label. Tubes are earlier production labeled and packed by Westinghouse a few years later. Very desirable and some of the best American made 12AT7 tubes.
1131-IMP 814 811
NOTE: From the same lot of Item 811, these tubes have imperfect test scores. Still quite usable in many applications. Single Tubes MINT NOS NIB TUNG-SOL 1960s 12AT7 Gray Plate Tubes with Halo Getter Westinghouse Label. Tubes are earlier production.
811B