Mullard, Made in Great Britain
ECC83 12AX7 Long Plate Valve Tube
Long Grey Ladder Plates, Halo Getter
F92 B9J Blackburn Code in the Glass
Tested Good on AVO VCM 163
Ia 1.2/1.1 - Gm 1.1/1.4
100% Book Spec = Ia 1.2 - Gm 1.6
Used, Supplied in White Box