Take a look, and see if you can choose the right penny. Do NOT look at a real penny first- I know you've seen a real one.

See if you can pick the correct one here. You can check how many people do not choose the correct one; it is quite surprising.

I didn't get it the first off. My wife did... and pretty quickly too.

Penny (http://www.exploratorium.edu/exhibits/common_cents/index.html)

I got it. I guess that tells you I have alot of pennies. ;)