"Morgan's Ghost" (also called "Three Buccaneers" and "Pieces of Eight" in production) is an unreleased cartoon film by Walt Disney Productions, dated around 1939. A Disney comics adaptation, Donald Duck Finds Pirate Gold, was published in Dell Comics' Four Color #9 in 1942.
It would also have been the first film which had Mickey Mouse's new eyes, which would first appear in The Pointer (1939).