84=6Z4 Belmont engraved base used/good 1930's (50/40 and 50/40)

84=6Z4 Belmont engraved base used/good 1930's

50/40

50/40

TESTED on TV-7D/U: 40 is minimum pass for good

NOTE: YOU CANNOT! SUB THESE 6Z4 for the CHINESE branded 6Z4

SPECS:

(84=6.3V @ 500ma Filament, 1250V PIV, 60ma)

USED IN:

Philco Model 40-180 1939-1940