This is smooth magic and it might take a minor investment in a couple of dollar coins and a Chinese
coin, but wow is it cool! To be fair, this will take a small amount of practice to get right. I
found watching the video twice helped a lot, but it is well worth it. If you don't find a coin
right away, you can practice on a similar coin with a sharpie to mark the difference.
Mario
has designed a very clever and incredibly smooth showpiece that will be a great addition.