The obverse (bottom pic; rotate it 90 degrees clockwise to make it right way up) is the standard inscription of coins of the Da Guan period (1102-1111 AD) of the reign of Song Dynasty emperor Hui Zong. But the two characters on the other side aren't usual for Song Dynasty cash coins. I suspect what you have is a charm, rather than an actual 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