hairlines

Delicate scratches on the surface of a coin.

half eagle

The United States five-dollar gold coin minted from 1795 to 1929.

Hard Times tokens

Pieces of a political or advertising nature, privately made and used as money during Andrew Jackson’s presidency (1834–1841). Most are approximately the size and value of the then-current U.S. large cent.

Hawaii Note

Numismatic name for certain $1 Silver Certificates and $5, $10, and $20 Federal Reserve Notes with brown seals and HAWAII overprinted on both sides, issued in Hawaii during World War II.

holey dollar

A Spanish or Spanish-American eight-reales coin that was repurposed in 1813 to alleviate a coin shortage on Prince Edward Island. One thousand of the coins were counterstamped and had a plug cut from the center.

hologram

The result of an advanced form of photography invented in 1947 that allows an image to be recorded and viewed in three dimensions.

hub

The positive-image steel punch to impress a coin’s design into a die for coinage.