Whitman Expo
gem
A coin of exceptionally high quality, typically considered MS-65 or PF-65 or better. See More
german silver
An alloy of copper, nickel, and zinc, with a silvery appearance. See More
Gold Certificate
Note from $10 to $10,000 issued in large-size and small-size formats, redeemable in gold coins. The backs of large-size notes were printed in gold color (and in green for small-size notes). See More
grade
Designation assigned to signify the amount of wear or circulation a note has experienced and its condition today (see the introduction for more information). Grading can be expressed by adjectives (such as Good, Extremely Fine, and Uncirculated), or by abbreviations in combination with numbers from 1 to 70 (adapted from the coin grading system), such as EF-40 or Unc-63. See More
grade risk
The financial risk a purchaser takes on when buying an uncertified coin at the price point of its assumed or estimated grade. Should that coin actually be of a lower grade than that originally estimated, the purchaser would not be able to recoup their initial investment. See More
Grand Watermelon Note
Numismatic nickname for the $1,000 Series of 1890 Treasury Notes (Coin Notes), with three zeros on the back in the form, fancifully, of watermelons. Also see Watermelon Note. See More
Green Eagle Note
Numismatic nickname for a Series of 1918 $1 Federal Reserve Bank Note with an eagle printed in green on the back. See More
greenback
Piece of paper money of $1 face value or higher with the back printed in green. Unofficial popular term for United States paper money in general, popularized by the Legal Tender Notes of the 1860s with their green backs (though these were not the first to be printed in this color), and widely used since. See More
GSID
Greysheet identification number, a unique ID for each coin and paper-money listing in the Greysheet database. See More
Gules
On a shield or flag, the color red, represented on coins with a pattern of narrow vertical lines. See More