RAYTHEON, Made in USA
JAN CRP 6SN7GT VT-231 Valve Tube
JAN Military Spec
Black Plates, Square Getter
Tested Good on AVO VCM 163
Book Spec = Ia 9 - Gm 2.9
This Valve Tests = Ia 20/12.2 - Gm 3.65/2.95
NOS, has a Loose Glass Shard