From verso of card: "Lay a handkerchief flat on the table, one corner pointing to yourself. This corner should have a small identification mark. Put a coin in the centre. Fold marked corner over till it slightly overlaps the opposite corner. Fold two or three times away from you. Now open out handkerchief again; the coin has vanished. METHOD.--Unfold so that marked coin is away from you, causing the handkerchief to open upside down and the coin to fall on the table (which should be covered with a tablecloth."