Or and example like me, you find something that isn’t worth that much, you give it to the museum and they have you in their database, so if I ever were to find something by chance without metal detector, I still wouldn’t get anything

This will sound like a joke, but if you find something and want some money from it, they will make a commission that can call cops to investigate your home and if they find anything resembling metal detector or other historical finds, you might end up paying them and go to a court

In Czechia, you will actually got something like 10% of the actual price or even less, and if you find it with a metal detector, you won’t get anything. Believe me, I had found many things that are now in museum and didn’t ever get anything