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1 X CV1988 TUBE. USED.
BRAND: MULLARD. 1950s PRODUCTION.
BLACK PLATES, RECTANGULAR GETTER.
THIS TUBE HAS THE CENTER PIN BROKEN AND GLASS INSIDE THE TUBE. THIS DOES NOT AFFECT ITS FUNCTIONALITY
TESTED IN AMPLITREX AT1000 TUBE TESTER:
91/71% EMISSION (EM) 92/84% TRANSCONDUCTANCE (GM) 0.2/0.2mA/V GAS