Hello Michael,  I'd be most interested to see what you have found.
My friend and I have about a dozen organs between us and that includes
three or four Molinaris.  Some years ago we even hosted an MBSI meeting
during which we had a concert of about ten organs.  If you'd like to
send a few pictures I'll be happy to help you replace the panel in
question.

Regards
Craig Smith
near Rochester, New York