4 X CV850 MULLARD TUBE. BLACK PLATES. 1960s AMRY PROD. MATCHED QUAD AH ENA

FOR SALE:  4 X CV850 TUBE. NEW OLD STOCK IN ORIGINAL BOX.
BRANDS: MULLARD. 1960s BRITISH ARMY PRODUCTION
BLACK PLATES, SQUARE GETTER
MATCHED QUAD

TESTED IN AMPLITREX AT1000 TUBE TESTER 
100% EMISSION (EM). 101% TRANSCONDUCTANCE (GM). 1.0mA/V GAS.

103% EMISSION (EM). 98% TRANSCONDUCTANCE (GM). 1.6mA/V GAS.

101% EMISSION (EM). 103% TRANSCONDUCTANCE (GM). 1.5mA/V GAS.

103% EMISSION (EM). 92% TRANSCONDUCTANCE (GM). 0.8mA/V GAS.