2C22 / 7193 JAN
Rugged Mil. Spec. amplifier tubes manufactured in the United States by National Union. These fine glass triode tubes, 1958 production, come with 8 pin octal bases, plate and grid caps on top, thick black plates and stout internal structure. They are printed in white NATIONAL UNION GN 2C22 MADE IN U.S.A. Boxes are standard military beige printed DAYTON OHIO MFG/CONTR.TYPE 2C22 A/MIL-P-75 7/58 and NATO coded 5960-114-3853. Puchase order number is AF 33(604)-19299.