I hope you have enjoyed reading this book as much as I enjoyed writing it. Tremendous time and effort have gone into fashioning and writing How to Grade U.S. Coins. Still, I know that it is still far from perfect. Grading uncirculated and proof coins is a complicated subject, and many details which seem insignificant can make a substantial impact on the final grade. I'd like to try to improve this book in the future. Therefore, I would be delighted to hear from any readers who feel they can offer suggestions to improve even the most minute details within this book. Please address all comments and suggestions to me, Jim Halperin, 3500 Maple Ave. 17th Floor, Dallas, TX 75219-3941 , or e-mail me at [email protected]. Please Visit Our Sponsor: Search Heritage's Inventory: By Keyword/Lot No. Copyright © CoinGrading.com Dallas, Texas USA All Rights Reserved e-mail: [email protected]