This seems to be a long forgotten, wonderful coin vanish. What I really like with it is the concept behind. A nice idea to use the small coin as a reasoning to bring the hands together in order to steal the big coin. A perfect example of how to hide the actual trick action under a natural smaller action.
I hope that the new generation of magicians will not forget about this beautiful off-beat vanish. It is easy to perform and fun. And it fools the spectators …