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1 X ECC40 TUBE. NEW OLD STOCK.
BRAND: PHILIPS-MINIWATT. 1959 PRODUCTION.
GREY PLATES, SOLID GETTER, COPPER RODS.
TESTED IN ROEHRENTEST TUBE TESTER:
105/70% 6.327/4.219mA EMISSION (EM) 3.01/2.54mA/V TRANSCONDUCTANCE (GM)