20.5mm symbol tube manufactured by Burroughs

The B-6036 is a clear glass end-view symbol nixie tube manufactured by Burroughs.Currently i don't have any informations about this tube, but it looks very siliar to the B-6034, so i guess the specifications are very similar. It can display a minus and AC sign, but it looks like there is also a plus sign. Sadly i don't have any data about this tube and the plus sign does not light up.
Brand / Manfacturer Burroughs
Same Types
Likely Tyes
Symbol height in mm 20.5
Characters / Symbols -,+,AC
Decimal point none
Base / Socket B13B
Starting Voltage (typ) 170 V
Maintaining Voltage (typ) 145 V
Current per Segment 2.25mA
Reccomend Resistor 10kOhm