Coins have pictures on them depicting something or other, every country has them. I collect them and have lots of different ones. Some are a lot rarer than others so you have to think about buying those and a company called Change Checker has a website for this.

Well they have now announced they are to do trading cards with the coin design's on them and the rarity of the card will match the rarity of the coin making collecting them the same challenge as finding the coins.

You cannot buy the cards, they will be included randomly with a purchase from them. No idea on how many there will be but will presumably be an ongoing set as new coins are released all the time.