SYLVANIA, Made in USA

JAN CHS 6SN7GT CV1988 VT-231 Valve Tube

JAN Military Spec

Black Plates, Dimpled Foil Getter

Fully Tested on AVO VCM 163

100% Book Spec = Ia 9 - Gm 2.9

Ia 7.4/7.7 - Gm 1.5/1.4

Used, Supplied in White Box