Docc asks the participant to secretly think of and write down a year from the 19th century, then places a modern American quarter in their closed hand. He guides them through an imagined journey back in time, where they mentally exchange the quarter for an old coin belonging to H.G. Wells. When they return to the present and open their hand, the quarter has impossibly changed into an antique halfpenny and its date exactly matches the freely thought-of year.
