Can anyone identify what this piece is?

[GaryA95]

Hey everyone, still in the process in cleaning this piece up but just seeing if anyone has any idea on what this piece may be?

Has what looks like Chinese encryptions on it.

Was found today while out at the beach detecting and will post better photos on when I've got I all cleaned up.

 

[Dean Mortimer]

It has the 12 pointed star on it.

 

[silver]

Has four triangles around a circle too.