1 X EF91 / 6AM6 / CV138 WESTINGHOUSE TUBE. NEW OLD STOCK.

BRAND: WESTINGHOUSE

GREY PLATES, HALO GETTER, COPPER RODS.

TESTED IN FUNKE W20 TUBE TESTER:

MINIMUM GOOD EMISSION = 60% = 4mA

10mA (150%) EMISSION (EM)