Is There Just One Crown?

Do we know what pharaohs wore really? Were there any sort of standard items that you might expectofle now. There's not a single crown from pharaoh and throughout the dynastic age. So this merely makes us wonder, is this because there was just one crown? And i should say that when we see them wearing crowns, hey'r wearing a range of different crowns. They're very different stylistically. It's a really interesting mystery as to where these crowns are and what they represent.