Unknown (B-40225-AL)

7.8mm symbol tube manufactured by Burroughs

This is a unknown miniature nixie tube manufactured by Burroughs. It can display the letters A to E as well as the plus and minus sign. If you have any information about this tube, i would be happy to hear about it UPDATE 11/JAN/2020: I got a message an the information that this is a type B-40225-AL.
Brand/ManfacturerBurroughs
Same Types
Likely Tyes
Symbol height (mm)7.8
DisplayA,B,C,D,E,+,-
Decimal pointnone
BaseSK-116
Starting Voltage (typ)170 V
Maintaining Voltage (typ)0 V
Current per Segment0mA
Reccomend ResistorTested at 10kOhm