An unused new old stock (NOS) GS-35B transmitting tube.
Prior to sale we run each one up heaters only on a test rig with full cooling applied for a few hours. So when you get the valve it can be put into immediate use with full voltages.
Note this is for the valve only without the copper anode cooler. These are available as an extra if required.
We can also supply a set of anode and cathode straps/clamps in brass – see HERE