15.5mm numeric tube manufactured by National Electronics

The NL-921 is a clear glass end view nixie tube manufactured by National Electronics. It can display numerals 0 to 9 and the left decimal point. The Numerals are alligned to the right inside the glass housing. I don't have any information on this tube, but it looks very similar to the NL-809
Brand / Manfacturer National Electronics
Same Types
Likely Tyes
Symbol height in mm 15.5
Characters / Symbols 0-9
Decimal point left
Base / Socket SK-136
Starting Voltage (typ) tested at 170V, 15kOhm V
Maintaining Voltage (typ)  V
Current per Segment mA
Reccomend Resistor