18mm numeric tube manufactured by Reflector/Sovtek

The IN-12AV is 18mm end-view numerical nixie tube. Its dimensions are identical to the IN-12A and IN-12B, which are very common. This tube is rare, i have only seen them once, and you can't find any information about it. When i aquired this tube, the seller said it was military improved edition, but i have no proof that this information is genuine.
Brand / Manfacturer Reflector/Sovtek
Same Types
Likely Tyes
Symbol height in mm 18
Characters / Symbols 0-9
Decimal point none
Base / Socket SK-136
Starting Voltage (typ) 170 V
Maintaining Voltage (typ) 145 V
Current per Segment 3mA
Reccomend Resistor 8.6kOhm = 2.9mA


See IN-12A or IN-12B for image of digits