15.5mm numeric tube manufactured by Lorenz SEL

The GN-4 is a red coated numeric nixie tube manufactured by Lorenz SEL (Standard Elektrik Lorenz). Its relatively compact and round shaped. There are a few other GN-4 models manufactured by different comapnies. Lorenz started producing the GN-4 in 1964.
Brand / Manfacturer Lorenz SEL
Same Types
Likely Tyes
Symbol height in mm 15.5
Characters / Symbols 0-0
Decimal point none
Base / Socket B13B
Starting Voltage (typ) 170 V
Maintaining Voltage (typ)  V
Current per Segment 2mA
Reccomend Resistor 15kOhm @ 170V, 56kOhm @ 250V, 82kOhm @ 300V according to datasheet.