Gene Poinc's The Midas Touch (Vintage, Sterling Magic Creations)

Description

Using your Midas Touch, repeatedly change a silver half dollar into gold and back again!  Steeped in suspicion, your audience thinks that you are using either a two-sided silver/gold coin or two coins.
Of course, they're bewildered when you hand out an all gold half  for their inspection!  If you wish, baffle them even more by vanishing the coin from your hand while one of your spectators grasps it firmly with both of their hands!
The Midas Touch is as baffling as the gold itself and it uses are limited only by your imagination.