12.5mm numeric tube manufactured by National Electronics

The NL-1222 is a numeric side view nixie tube manufactured by National Electronics. I do not have any info or datasheet. The only source in the internet is a old newspaper that advertises the NL-1222 as a nixie tube for space critical applications and works well with strobe or time-share applications
Brand / Manfacturer National Electronics
Same Types
Likely Tyes
Symbol height in mm 12.5
Characters / Symbols 0-9
Decimal point right
Base / Socket 0
Starting Voltage (typ) tested at 170V, 15kOhm V
Maintaining Voltage (typ) 0 V
Current per Segment 0mA
Reccomend Resistor 0