1976: Celestino Coronada
I have not been able to get hold of this version; the casting alone makes it look exceedingly peculiar. I believe it is occasionally available through obscure channels.
Claudius: Barry Stanton
Hamlet; Laertes&: Tony Meyer
Hamlet; Laertes: David Meyer
Ophelia; Gertrude: Helen Mirren
Player Queen; Lucianus; 1st Player: Vladek Sheybal
Polonius: Quentin Crisp