Unknown ( B-5442)

ca 15mm symbol tube manufactured by Burroughs

This is a unknown type of tube manufactured by Burroughs. It can display the plus and minus sign. The plus sign has a very unusual shape. It is likely that this tubes belongs in the series of tubes were the B-5448 / B-5445 can be found If you have any information about this tube, i would be happy to hear it UPDATE 11/JAN/2020: I got a message with the information that this tube is a type B-5442
Brand / Manfacturer Burroughs
Same Types
Likely Tyes
Symbol height in mm ca 15
Characters / Symbols +,-
Decimal point none
Base / Socket 0
Starting Voltage (typ) 170 V
Maintaining Voltage (typ) 0 V
Current per Segment 0mA
Reccomend Resistor tested at 10kOhm