If you watch the demo video for this, you're going to immediately be thinking this is done with gimmick coins. You would be incorrect. What you see is done with 3 coins, and only 3 coins, and it is done in such a way as to make it completely clean when you are done.
Justin Miller has created a symphony of coin manipulation with this routine. Watching it performed is like watching some piece of fine art being sculpted from nothing. You think it's amazing when you see it? Wait until you see what it takes to make it happen!
Miller gives you a wonderful play-by-play breakdown on how to accomplish this miracle. His work on sleeving is incredible, and the moves are so smooth you'll never get caught once you get it down pat. The only "iffy" move was the final vanish which you'll probably catch right away when watching it. Every other movement is perfectly subtle and impossible to catch, but that final vanish is a little obvious. Granted, the spectators will probably never catch it though.
If you decide to do this in a warmer climate using short sleeves, you can still make the magic happen if you use an expanded coin shell. This will give you some angles to worry about that the long-sleeved version doesn't have, but it's more practical in some situations.
This will take practice, and lots of it. The sleeving moves alone will have you picking coins up off the floor for quite a while, but once the move is smooth it can even amaze you when it happens! Major props to Justin for sharing the work on this incredible routine!