About 15 years ago, I purchased the "Silver Copper Brass Transposition" coin set from Johnson Products. It is very well made and durable, and has consistently been my favorite coin routine for strolling magic. Unlike Matrix, no table or close up pad is needed for the routine. It gets wonderful reactions from spectators. I think a big reason for why it is so powerful is that a silver Kennedy half dollar held in the closed hand is shown to have magically vanished when the hand is reopened and not one, but two completely different coins, which were openly placed in the pocket a moment before (a brass Chinese coin with a hole in the center and a copper 20 centavo piece), have appeared in the hand in place of the half dollar. Conversely, the half dollar has magically "traveled" to, and reappears in, the other hand. This is only the first in a series of seemingly impossible transpositions and transformations. Sure it takes a bit of practice and finesse to get the working smooth, but there are no real difficult sleights, and you will be repaid many times over in magical dividends. I like to end with a transformation of the half dollar into a jumbo half dollar (not included) using a spellbound change.