Numismatisk litteratur - 3 bøger om amerikanske mønter
Beskrivelse:
1. The official American Numismatic Association Grading Standards for United States Coins, Kenneth Bressett, 7th edition, 2013. ISBN 978-079483824-9
2. Photograde, Official Photographic Grading Guide for United States Coins, James F. Ruddy, 19th edition, 2005. ISBN 0-9742371-5-9
3. Coin Chemistry, Including Preservation and Cleaning, Weimar W. White, Third Edition, 2012. ISBN 978-0-9713924-1-0
