Mullard Blackburn, Made in Great Britain
Old Logo CV4024 ECC81 12AT7 Valve Tube
Grey Plates, Halo Getter
Fully Tested on AVO VCM 163
100% Book Spec = Ia 10 - Gm 5.5
Ia 10.3/9.3 - Gm 5.6/5.2
New Old Stock, Supplied in Original Box