ecc83 Philips Monza D getter foil slanted 45 degrees 2X tubes
code 2Z 58 between pins
probably mC2 as per inner structure
long plate 17mm
dark grey plate
getter welded
fully tested 48/50 ; 48/37 ( good at 32/32 ) on tube tester calibrated TV7D/U
U FOIL D GETTER SLANTED 45 DEGREES DIMPLED, PPRODUCTION CODE 2Z 58 BETWEEN PINS
17MM LOMG PLATE
RIBBED PLATE
DARK GREY PLATE
COPPER RODS
HIGH QUALITY VINTAGE TUBES
ECC83 Double Triode Audio Frequency High Gain
ECC83 = 12AX7 = B339 = 95-127-01 = 6L13 = CM1 = ECC83S b759 e83cc
Similar Tubes Normally replaceable-slightly different: 0AX7 ; 12AX7A ; CV492 ; E2164
Other class quality (otherwise equal): 7025 ; CV4004 ; E83CC ; M8137
Other characteristic (electr. data): 12AY7 ; 6N4_China
Other base and other heater: 6EU7 ; ECC808
Multiple differences or of other kind: 5751 ; 7729
Successor Tubes 1963 ECC808 5751WA
Base Noval B9A
Filament Heater Vf 12.6 Volts / If 0.15 Ampere / Indirect / Parallel / series AC/DC
BOX 132