It's not an actual coin, if that's what you were hoping. The design on the obverse is taken from Qian Long cash coins from the 1700s, but no cash coin, large or small, ever had an elaborate design like that on the reverse.
Being large, this "coin-like charm" is intended to be nailed up on the wall of a house. It's likely not very old, late 20th century at the oldest, made in either China or Vietnam.
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