Trick Effect & Routine:
Yes guys! More basic technique from Bobo! I can see you are all tingling with excitment....Ah-hem, anyways, seriously, this is a great move which I use a fair bit. You have three coins, but the audience only sees two, and they see them in a fair way in both hands.

Preparation:
You need three or more coins.

Method:
Say you are in a coins across routine or something, and you have an extra coin you want to keep hidden. Say you are working with just three coins. Have one coin finger palmed in the left hand, with a second coin on top of it. Have the third coin secretly finger palmed in the right hand. Show two coins in the left hand, and apparently chuck them into the right hand, but you really keep one of them finger palmed. Open the right hand, and their will be two coins. The effect is simply that you had two coins and chucked them from hand to hand. This is quite natural and nobody should suspect that there are in fact three coins.

Comments:
This is an excellent move. You can use almost any number of coin in it, and if you're careful, you can use coins of different sizes and colours.