Hopping Half Set - Sterling

Both sides of a US Half Dollar (HD) and an English Penny (EP) are shown. You remove the HD from your hand and place it into your pocket but when you open your hand both coins are still there. You remove the EP from your hand and place it into your pocket and again when you open your hand both coins are still there. Once more you remove the HD from your hand and place it into your pocket but when you open your hand both coins are still there. Now you very carefully remove only the EP from your hand, showing both sides as you place it into your pocket but this time when you open your hand, both coins are gone!!!