The Complete Encylopedia of U.S. Coin Varieties is a book which I am Currently compiling. Although new varieties are being discovered daily, the book will never be completed. I hope this site will help in identifing your varieties. How to use this site The setup of the site is quite easy to read. First listed is a main variety. For example
K01-10 Type of 1856
K=first initial in my last name
01=denomination
10=first major variety followed by the variety
Then all subvarieties will follow. Such as
K01-11 Square O in OF
11=subvariety of K01-10
K01-12 Squared inner O in OF
12=subvariety of K01-10
If your coin is not a "Type of 1856", then go to the next main variety K01-20 | 
