The 15 face puzzle by Frank Bellew.
Can you find 15 faces hidden inside this face?
(Click to enlarge.)
From the book The Art of Amusing. "Being a collection of graceful arts, merry games, odd tricks, curious puzzles, and new charades. Together with suggestions for private theatricals, tableaux, and all sorts of parlor and family amusements. A volume intended to amuse everybody and enable all to amuse everybody else; thus bringing about as near an approximation to the millennium as can be conveniently attained in the compass of one small volume." By Frank Bellew. 1866.