So many routines with just two coins!
Place an American half dollar and a Mexican centavo style coin (a copper color coin) in a spectator's hand. Close their hand, reach in and remove the half dollar. Now "invisibly" remove the copper coin. Of course, the spectator will insist that the copper coin is still in their closed hand. But when they open it, the copper coin has, in fact vanished and has changed to a quarter!
Or perform it like Justin Impossible as coin thru table!
Completely mechanical and quality made from a real US half dollar. Comes with instructions.