Okay kiddo, so you know how when you do something really special, like winning a game or getting a good grade in school, your parents might give you a special coin or medal to remember it? Well, that's kind of like what commemorative coins are!
In Poland, they make special coins to remember important events or people. These coins are made out of special metals, like silver or gold, and have beautiful designs on them. Some of them are very valuable because they are rare or have a special story behind them.
For example, one of the most famous Polish commemorative coins was made in 2010 to celebrate the 200th anniversary of the birth of Fryderyk Chopin, who was a famous composer from Poland. The coin has a picture of Chopin playing the piano on one side, and a beautiful design of a rose on the other side.
Commemorative coins are not used as regular money like the coins you use to buy candy. They are usually made in limited numbers and are mostly collected by people who love history or just think they look cool. So, if you ever visit Poland, you might see some of these special coins on display in a museum, or maybe even in someone's coin collection!