Here we have a
Rare Western Electric 261A 261-A Brass Base Audio Amplifier Vacuum Tube ( Has Continuity )
Tested for continuity and it has on the pins diagonally across from each other for the Filament. ( As you look in the tube you can see which two pins have the filament... Continuity ok.
Please see pictures for cosmetic condition
This was in my fathers store, which I ended up with all the stock too. He repaired military Radios , Ham Radio, and sold new and used Electronic equipment of all sorts of description.
It has been in storage for years and , I am sure you will agree, it is in excellent cosmetic condition.
I do not have the facility to test it further , though my father never kept anything that did not work.
But because I cannot fully test it myself , I have to sell it AS IS with NO RETURNS.
Thank you for looking