20mm numeric tube manufactured by STC

The G10/200E is a numeric end view nixie tube manufactured by STC. It has black shrink tube around the body for better contrast. These tube is very rare because the digits are either hand formed or made by very early machinery, all digits are "unique" shaped. Possibly one of the first nixie tubes manufactured by STC
Brand / Manfacturer STC
Same Types
Likely Tyes
Symbol height in mm 20
Characters / Symbols 0-9
Decimal point none
Base / Socket 0
Starting Voltage (typ) tested at 180V, 10kOhm V
Maintaining Voltage (typ) 0 V
Current per Segment 0mA
Reccomend Resistor 0