The following is a picture of a very valuable E3 exclusive pokemon coin that I have for trade.  This coin was released during the 2000 Electronic Entertainment Expo.  To get this coin, you had to show genuine interest in Nintendo, as they only gave this coin to people who hung around the Nintendo pokemon display for 2 or 3 hours.  They were VERY stingy with this coin, because there weren't many of them to give away.  I believe that there were only about 100 of these coins given away.  This coin was given away as a way to commemorate the release of Pokemon Gold/Silver on the Game Boy.  As you can see below, there is a silver side (featuring Lugia), and a gold side (featuring Ho-oh).  It's a very detailed cloisone coin.  And, believe it or not, this coin is STILL in it's original factory seal!!  The plastic is a little wrinkled from travel, but the coin inside is still mint.  Isn't it awesome?