VarietyPlus service is also available for coins already encapsulated by NGC.
For coins where the fee column is blank, no VarietyPlus charge is required to
have your coin designated during grading. For coins marked $15, a $15 surcharge
applies to the tier fee during grading, or a $15 fee applies to have the VarietyPlus
designation added to any coin already graded and encapsulated by NGC.
Bowers, Q. David & Mark Borckardt. The Harry W. Bass, Jr. Museum Sylloge. The Harry W. Bass, Jr. Foundation, Dallas, 2001
Dannreuther, John W. & Harry W. Bass, Jr. Early U.S. Gold Coin Varieties: A Study of Die States 1795-1834. Whitman Publishing, LLC, Atlanta, 2006
Fivaz, Bill & J.T. Stanton, Ken Potter, Editor. The Cherrypickers' Guide to Rare Die Varieties, 5th Edition, Volume 2. Whitman Publishing, Atlanta, 2012
Gillilland, Cory. Sylloge of the United States Holdings in the National Numismatic Collection of Smithsonian Institution, Volume One, Gold Coins 1785-1834. Smithsonian Institution Press, Washington, 1992
Hilt, Robert P. Die Varieties of Early United States Coins. RTS Publishing Company, Omaha, NE, 1980
Miller, Robert W. Sr. United States Half Eagle Gold Coins 1795 to 1834. B.C. & C., Elmwood Park, NJ, 1997
Taraszka, Anthony J. United States Ten Dollar Gold Eagles 1795-1804. Anton’s, Portage, MI, 2000
Winter, Douglas. Gold Coins of the Dahlonega Mint 1838-1861, 2nd Edition. Zyrus Press, Irvine, CA, 2003
Winter, Douglas. Gold Coins of the New Orleans Mint 1839-1909, 2nd Edition. Zyrus Press, Irvine, CA, 2006
Winter, Douglas. Gold Coins of the Charlotte Mint 1838-1861, 3rd Edition. Zyrus Press, Irvine, CA, 2008
Winter, Douglas, & Lawrence Cutler, M.D. Gold Coins of the Old West: The Carson City Mint 1870-1893. Bowers & Merena, Wolfeboro, NH, 1994