I remember them... and used to have all 3 (if we are talking about the same set).
There was Kenny Baker, Jeremy Bulloch and Peter Mayhew.
They were made for a Toy Expo in Florida by a large collectibles store whose name escapes me right now.
They were "legitimized" by the fact that the actors signed the figures and the figures used to be in pretty high demand.
Sorry... I don't have pics of any of them tho.