18mm numeric tube manufactured by Melz

The IN-8-OS is a clear glass numeric nixie tube. It was manufactured by Melz. The OS (OC) marking indicates a special model, according to the seller, this tube was used in the soviet space program, but no documentation could be found
Brand / Manfacturer Melz
Same Types
Likely Tyes
Symbol height in mm 18
Characters / Symbols 0-9
Decimal point none
Base / Socket 0
Starting Voltage (typ) 170 V
Maintaining Voltage (typ) 150 V
Current per Segment 2.5mA
Reccomend Resistor 8.2kOhm


Check IN-8 for Images of the digits