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/ManfacturerBurroughs
Same Types
Likely Tyes
Symbol height (mm)ca 15
Display+,-
Decimal pointnone
Base0
Starting Voltage (typ)170 V
Maintaining Voltage (typ)0 V
Current per Segment0mA
Reccomend Resistortested at 10kOhm