Well, really the whole dang organ! The amp looks to be a p-p 6L6 to a mono speaker. Too bad it wasn't a stereo version.

I counted 30 sylvania 6SN7's where all had the code 344 on them, which I think means the 44th week of 1953. One Tung Sol and 6-8 GE 6SN7's. One Raytheon (japan) 5U4GB, and a couple other tubes not worth anything. It's missing the 6L6's so I have no idea how it sounds. I'll take some pics tonight so ya'll can see.

I'd like to throw mains to the amp just to see what the voltage after the rectifier is. It's either got another filament tranny on the amp or it's a big choke. I won't know till I get time to take the amp out.