[Paulroney]

I recently rescued up a Philco push button radio from the local dump.
All of the exterior paper labels on the back are missing. It looks like a 39-25T, but has eight tubes.    
On the inside of the case there is a tube diagram that says 39-6443E, but I can find no reference to this model on the internet.      
The tube diagram shows seven tubes, but the chassis actually has EIGHT sockets, one of which is empty. The empty socket has 6V6 written in pen beside it.      
The radio was produced in Canada, based on the tag on the back of the chassis    
I would like to get schematics and attempt a restoration, but don’t know where to go from here, as I don’t trust the model number specified, since the tube count is wrong. In addition, the rectifier tube on the tube diagram is in a different location on the chassis, so the diagram is obviously wrong.
I wondered if the radio had been modified to add the additional socket, but it looks original.
Any help or advice on how to proceed would be greatly appreciated.