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1 X 6922 TUBE. NEW OLD STOCK IN ORIGINAL BOX.
BRAND: RAYTHEON. 1960s PRODUCTION.
GREY PLATES, HALO GETTER.
TESTED IN AMPLITREX AT1000 TUBE TESTER:
105/85% EMISSION (EM) 93/88% TRANSCONDUCTANCE (GM) 0.4/0.4mA GAS