5670/WA 3 MICA BLACK PLATE

 Miniature glass 9 pin ruggedised double triode tubes manufactured in U.S.A. by renowned General Electric, identical to WE 396A and 2C51. These tough Mil. Spec. tubes have black plates, 3 mica spacers, and square top getters. They are printed in white with GE logo JG-5670/WA 188-5 (indicating Owensboro Kentucky plant), and typically 56-43 57-22 (may vary), all tubes of 1955 to 1960 production. Also glass-etched 5670 with dot code. Pro-Comm boxed.