Where are these coins from an what denomination is this?

Hi.

Can someone tell me, what this is and where it comes from? Which year or decade of wha country?

Diameter of the silver looking ones ca.25mm and the two others ca.30mm. Weight a few gramm. 

Ty

They look like chinese cash coins

and i should add they look like modern repro ones

Nice charms indeed

You may learn from them HERE