Hi, Charles. That is a modern tourist replica of a Spanish Colonial "cob" coin. It's the sort of thing sold in museum gift shops in places like St. Augustine. Real ones were struck in silver. Yours is cast in base metal of some kind.
Thanks for the information. I guessed it was not authentic because of the weight but did not know of what. Thanks
These can sometimes be tricky if they're sufficiently silvery looking, because even the originals tended to be pretty crude. Fortunately most tourist replicas are pretty obvious, though, to anyone who's seen a few real ones. (Yours rather blatantly so.) Sorry, no pirate treasure this time, but hey, now you've got a pocket piece or golf ball marker or whatever, anyway.
Hi Charles, Welcome to Coin Talk !! where there is always someone ready to answer your Numismatic related questions and concerns. Please don't forget to enter Lord Marcovan's current monthly Coin Giveaway contest. Just click on the link in his post, read the rules, and sign right up! Thanks for posting Charles.