15.5mm symbol tube manufactured by National Electronics

The B-5992 is an american made end view nixie tube manufactured by National Electronics. Also it was manufactured by Burroughs. It can display the plus and minus sign.
Brand / Manfacturer National Electronics
Same Types
Likely Tyes
Symbol height in mm 15.5
Characters / Symbols +,-
Decimal point none
Base / Socket SK-136
Starting Voltage (typ) 170 V
Maintaining Voltage (typ) 150 V
Current per Segment 2.2mA
Reccomend Resistor 8.2kOhm @ 170V, 47kOhm @ 250V, 68kOhm @ 300V according to Datasheet