Copper Silver Brass Coin Transposition Copper Silver Brass Coins. These coins will switch places in your hands. Many effects possible: Hold the 50 cent piece in your left hand and the Chinese / English Penny in your right. Close your hands and magically they switch places! Very simple to perform. Looks like real magic. Completely mechanical. Recommend for ages 8 and up. We do not always have the exact coins that are pictured in the video/picture. Coin design/style might vary from the picture.