Sorry, but what did you expect for me to say?
Something among the lines - "Thanks for the effort" This is helpful or I need more info if someone knows this amp better..
Also there is thank button, which could spared you and me all this dialog.
I have couple other suggestions to you - PM TLSguy - he might know something about it and post your question on audiokarma forums where they know a whole deal more about vintage audio.
I hope my post gave you something to go by for start, besides photos.