The best way to find out is to call a coin collector or dealer to find out. Hope this helps.
What Would An Indian Head Nickel Be Worth?
I found a 1939 Indian head nickel in pretty good condition how much is it worth?
If there's no date on it, it's probably not in very good condition, and that makes all the difference. You can consult The United States Coins Red Book, but since you can't see a date on it, a professional will probably have to evaluate it.