if your still uming and ahhing read this honest aprasale from a coin fan thats me by the way.
you use a borrowed coin, it stays in plain view at all times till its hidden by hand or bussiness card.
no switches and no palming or strang hand girations, the exact same coin is used for the reveal.
you can hand back the bussiness card

and the revealed coin which remains in plain site at all times after the reveal.
its a utility prop up ther with the tt and the dl & trn.
buy it you'l like it, download it and enjoy.