ComWhat if your continental currency coin has only one R in currency?

Early coins often had misspellings because the engravers were not necessarily well-educated in the modern sense, and moreover, English spelling was not yet standardized. The "curency" goof is a recognized variety.

Continental currency is among the most frequently reproduced early coinage. Replicas will have the small word "COPY" worked into the design somewhere to indicate they're a reproduction, while fake ones will not have any special markings. If your coin doesn't have the word COPY on it, you can try dropping it gently. Most but not all fakes will sound clunky while a genuine coin will ring. However, even if it rings it could still be a good counterfeit so it would be best to have it inspected in person.