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ID = 20530
Brand: Tesla; Praha, Bratislava etc.
Tube type:  Television picture tube black+white 
Identical to 431QQ44

Base Duodecal (12-pin), B12A (not glass)
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Specified voltage AND current AC/DC
431QQ44: eigene Fotografie
Jürgen Tiedmann

More ...
431QQ44: Tesla Prirucni katalog obrazovek 61-64
Michal Patek

from Just Qvigstad

Usage in Models 3= 1962 ; 2= 1963 ; 1= 1964? ; 1= 1964

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):7

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