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4 X EF86 TUBE. NEW OLD STOCK IN ORIGINAL BOX.
BRAND: MAZDA, TUNGSRAM, TELEFUNKEN, BENTLEY ACOUSTIC. 1960s TESLA PRODUCTION.
GREY PLATES, HALO GETTER.
TESTED IN FUNKE W20 TUBE TESTER:
MINIMUM GOOD EMISSION = 60% = 1.8mA
3.8mA EMISSION (EM)
2.4mA EMISSION (EM)
2.3mA EMISSION (EM)
2.7mA EMISSION (EM)
CH165U1
