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1 X ECC189 TUBE. NEW OLD STOCK IN ORIGINAL BOX.
BRAND: TRIGON. 1960s PRODUCTION.
GREY PLATES, HALO GETTER.
TESTED IN AMPLITREX AT1000 TUBE TESTER:
130/124% EMISSION (EM) 131/117% TRANSCONDUCTANCE (GM) 0.8/0.6mA/V GAS
CH163U1