Welcome to CCF.
It's easier if the picture is in this forum, so I copied your coin below. (if that's ok)
As for the authenticity, it probably is a copy since I don't think Mayan had any metal coins. But I'm sure the experts will comment below.
Keep on looking and ask questions!!

Edited by Coconutjoe
01/12/2018 7:08 pm
01/12/2018 7:08 pm





















