I'm a member / restorer at the Asheville Radio Museum avlradiomusem.org and recently connected with a customer asking to restore a relative's Sott Masterpiece.
Been in the tube radio fixin' hobby since the early 70's and never came across one of these and saw a once-in- a -lifetime opportunity so of course I said YES!
From what i can tell, its mostly there but I have one question for the group. I have to re-cone the speaker but it has a 14 ohm VC, not the 38 ohm i've read about here. What are my issues if i run it with the14 ohm VC? THX