Two versions ^
VCF-tubes and Nixie-tubes

Manufacturer: HITACHI
Model: KK521
AKA:  
Year: 1972
Display: VCF-tubes / Nixie-tubes
Circuits:  
Dimensions: 254x218x80 mm
Power type: 220V
Origin: Japan
S/N:  
Owner: DEVIDTS Serge
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