Yes, sorry, it's a replica of a "pirate piece of eight", a cob-style Spanish-colonial 8 reales from the 1600s or early 1700s.
Genuine examples can look kind of crude, but this one simply lacks the detail and style I would expect to see on a genuine coin.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis