101 noise diode

This valve measures 64x17mm overall and has a B7G base.

This is a Russian noise diode. Information is needed about this valve. From examination the construction is either a heater/cathode surrounded by a larger anode, or a filament and anode surrounded by a shield. A small tube at the top of the electrode structure may be a gas reservoir. The pin connections appear to be: 1: Anode or shield; 2: Cathode (or anode); 3 and 4: Heater or filament; 5: n/c; 6: as 1; 7: the small tube (the other end is connected to 6). There is also a wire loop, which can be seen in the main picture, that does not connect to anything and may be there to prevent the electrode structure from moving.