10 Dollars Abigail Fillmore, Bullion Coinage

Abigail Fillmore joined the First Spouse bullion series in 2010 alongside her husband Millard's presidential gold dollar. The program was created partly to use gold allocated under the Presidential $1 Coin Act of 2005, and these half-ounce .9999 fine pieces were struck in deliberately limited quantities — the Fillmore issue had a mintage of just 3,482 business strikes, making it one of the lower-mintage entries in the entire series.

Abigail is credited with lobbying Congress to fund the first White House library after discovering the executive mansion had no books at all.