American Numismatic Association
United States Mint
American Numismatic Society
Modern Commemoratives
National Numismatic Collection, Smithsonian
Directory of World Mints
American Israel Numismatic Association
Israel mint
Colonial Coins & Currency presented by Colonial Williamsburg
British Museum Coins & Medals
Berlin State Museum Coin Collection
PCGS
ANACS
NGC
ICG
Denmark Royal collection
The Fitzwilliam Museum Cambridge
Casa De La Moneda