Nets of coins, you get a 1p, 2p, 2p and a 10p. They all fit inside 1 special 2p coin.
You take out x2 2p coins, 10p coin and a 1p coin show the spectator or cashier the coins and say “Ooo i only need 2p sorry” close your hand open it again and it has turned into a 2p coin. You can put them in a spectator hand and pick them up all the coins in 1 go and then quickly show just a 2p coin as well as all your hands empty!
NO INSTRUCTIONS IN THIS COIN GIMMICK, JUST THE GIMMICKED COINS FOR YOU TO MAKE UP YOUR OWN ROUTINES!