What is this small Chinese cash coin?

Hello,

I recently bought this tiny Chinese cash coin and I cannot identify it. It is very small and its diameter is around 16mm. Does anybody know what it is??

Thank you in advance

Hey, even I can tell that this one is a modern replica.  The quality of the striking is too detailed.  The obverse is covered with dots while the reverse is nicely smooth.  The rim and edge are too smooth, no signs of wear or damage.  This cash didn't come from Imperial China, that's for sure.