Hello Ameen --

These coins are all modern, circulating coins. As such, they are made of non-precious metal. If they were made of silver, they would be valuable, but they are not.

You can find these coins on our main web site. For instance, here is the one from Sweden:

https://coinquest.com/cgi-bin/cq/coins.pl?coin=19369

For information about modern coins, and what can make them valuable, please read this page:

https://coinquest.com/cgi-bin/cq/coins.pl?action=moderns