Mullard Made in Great Britain Modern Logo Print ECC82 12AU7 Valve Tube Short Grey Plates, Halo Getter Gf2 B4E4 Code in the Glass Fully Tested on AVO VCM 163 Ia 12.9/11.7 - Gm 2.2/2.1 100% Book Spec = Ia 10.5 - Gm 2.2 New Old Stock, Supplied in Original Mullard Box |