The magician shows a shoelace and a 3/4" Brass nut and has the spectator thread the nut on to the shoelace.  Spectator is then asked to hold both ends of the shoelace and a handkerchief (not supplied) is then used to cover the nut.  The magician brings out a large safety pin and reaches underneath the handkerchief for a moment.  After doing so, the handkerchief is removed and the pin is shown on the shoelace with the nut no longer on the shoelace but rather hanging at the bottom of the safety pin!  Includes instructions.  Condition very fine.