Shim Shell - 1 Euro Coin

Most modern shell coins are known as "expanded shells" as they are expanded to fit over coins on the same denomination. A shim shell, however, is exactly the same size as its normal counterpart, therefore will only fit over coins that are smaller than it.

This makes it perfect for a coin change effect. For example, you could show a quarter dollar in your hand and then change it to a 1 Euro coin.

This shimmed shell is also magnetic, which will come in useful in some effects.