15.5mm numeric tube manufactured by Siemens

The 5L5615 is a red coated end view nixie tube manufactured by Siemens. There is no other information available about this tube, but it seems similar to the ZM1180
Brand / Manfacturer Siemens
Same Types
Likely Tyes
Symbol height in mm 15.5
Characters / Symbols 0-9
Decimal point none
Base / Socket SK-136
Starting Voltage (typ) 170 V
Maintaining Voltage (typ)  V
Current per Segment mA
Reccomend Resistor tested with 10kOhm @ 170V