15.5mm numeric tube manufactured by Burroughs

The B-5440A is a clear glass numeric nixie tube manufactured by National Electronics. It can display the numbers 0-9 and has a left and a right decimal point.
Brand / Manfacturer Burroughs
Same Types
Likely Tyes
Symbol height in mm 15.5
Characters / Symbols 0-9
Decimal point left,right
Base / Socket RTS-54
Starting Voltage (typ) 170 V
Maintaining Voltage (typ) 0 V
Current per Segment 2mA
Reccomend Resistor 10kOhm@170V, 39kOhm@250V, 56kOhm@300V according to datasheet