This came from an old magician’s estate. All that’s left from the trick are these six Houdini cards that were used in the effect along with the instructions. Maybe someone has the complete trick and can use these cards as spares. The cards measure 3-7/8 inches wide by 5-1/2 inches tall.
The original effect goes like this:
Effect: You show a picture frame with a portrait of Harry Houdini. You open the back of the frame and separate all the parts: the back board, the backing cardboard, the portrait, the glass, and the frame proper. Putting the portrait aside, the frame is again assembled and covered with a handkerchief. A spectator holds the covered frame while you tear the portrait in pieces which are put inside a black cardboard cone. All the pieces, except one, disappear from the cone. When the frame is uncovered, all the vanished pieces have appeared under the glass, forming again the portrait of Houdini except for the one piece that remained in the cone. When this piece is turned over, the signature of Houdini is on the other side!