Unknown (fine grid)

15mm numeric tube manufactured by Unknown

This is a inverted mystery tube that has no part number or manufacturer printed on. It has a very fine anode grid and looks beautiful. From the look it could be a Mullard or a japanese manufacturer
Same Types
Likely Tyes
Symbol height (mm)15
Decimal pointnone
Starting Voltage (typ)tested at 170V, 10kOhm V
Maintaining Voltage (typ)0 V
Current per Segment0mA
Reccomend Resistor0