I had a long response typed out about die states, die markers, and Sheldon/Bowers-Whitman numbers around 9 hours ago, but I guess I failed to hit the "submit" button. Rather than re-type everything, I will just mention to the OP to check and see if the "0" in the date is directly opposite of the "O" in "OF." On the later die state coins (and maybe the earlier ones, too) the dies were slightly rotated. This does not guarantee authenticity, but will let you know that it is likely a fake, if there is no rotation.
If the coin is, in fact, genuine, it is worth a few hundred dollars, even with the AG Details/Corrosion grade.