According to Alan Kessler (The Fugio Coppers Newtonville, MA; Colony Coin Company, 1976), there are at least fifty-five varieties from twenty-four obverse dies and thirty-three reverse dies. These varieties are categorized into three different groups based on the style of the rays emanating from the sun.
Add to that the number of fantasy or replicas created of this coin then I agree with Cutler regarding getting a competent examiner to determine what you have.
Good luck,
Don....