"The Fabulous Philosopher's Stone" is an Uncle Scrooge comics story written and drawn by Carl Barks in October 1954.
The story was first published in Uncle Scrooge #10 (June 1955).
Scrooge McDuck takes Donald Duck and his three grandnephews on an expedition to find the Philosopher's Stone, a mythical artifact that would turn common metals into gold.
When the story was reprinted in Uncle Scrooge #253 (April 1991), the reference was changed to "881 years ago".
The International Money Council and Monsieur Mattressface later appeared in The Crown of the Crusader Kings (2001) and The Old Castle's Other Secret (2004) by Don Rosa.