Tenyo's Magic Tainment No. 21 "Magic Master Key". This item is now discontinued and no longer sold, making it very rare. In this magic trick, a metal key is used to pierce through the center of a 500-yen coin inside a case, but the coin inside the case appears without a scratch. The gimmick works without any problems, but please note that the case has a crack and the chain is missing. The outer box has scratches, stains, and wrinkles on the instruction manual, but the rabbit mark is uncut. There may be scratches, stains, and signs of aging that some people may be concerned about, so please check the photos carefully and make your own judgment. This item has been in someone's possession before, so if you are concerned or are looking for a complete product, please refrain from purchasing.