Vernet's Crystal Thief

With help from this clever piece of apparatus the magician is able to
vanish a silk handkerchief while held between the spectator's hands!

A clear tube is shown and a silk handkerchief is placed inside.  The
tube is wrapped into a piece of paper and then handed over to a
spectator to hold tightly between their palms.  Whenever the
performer wishes, the spectator is instructed to remove the piece of
paper from around the tube and they will find that the handkerchief is
completely gone!  The magician causes the handkerchief to reappear
at any location of his choice
......$7.50