The big silver one on the top caught my eye. It would almost certainly have some value. It's to bad it has a hole in it. I don't know how detrimental that might or might not be to it's value. Looks like a Silver Ducat, maybe from the Netherlands, but that's a guess. The man killing the dragon is probably St. George. The script seems to be Latin, anyway I can't make it out. I would try to find a good foreign coin forum online somewhere. Somebody in the know could save you hours and hours of research.
As for the others, probably not worth to much. They don't tend to be worth a lot as a rule, but I'm sure there are exceptions.
