Commemorative coin

A commemorative coin is like a special, shiny coin that people make to remember something important. It might be a special event or a person who did something really cool. Usually, they make these coins in limited numbers, which means not very many of them exist. This makes them kind of special and rare. People like to collect them and keep them as a way to remember important moments in history. Sometimes, the coins have pictures of important people or things on them, and sometimes they have special words or sayings. Imagine it like a special kind of money that you don't really use to buy things, but to remember and celebrate something special.