The Indian Head gold pieces or Pratt-Bigelow gold coins were two separate coin series, identical in design, struck by the United States Mint: a two-and-a-half-dollar piece, or quarter eagle, and a five-dollar coin, or half eagle. The quarter eagle was struck from 1908 to 1915 and from 1925–1929. The half eagle was struck from 1908 to 1916, and in 1929. The pieces remain the only US circulating coins with recessed designs. These coins were the last of their denominations to be struck for circulation, ending series that began in the 1790s.
Image: NNC US 1908 G$2½ Indian Head
Image: NNC US 1908 G$2½ Indian Head
Image: NNC US 1908 G$5 Indian Head
Image: NNC US 1908 G$5 Indian Head
The quarter eagle was a gold coin issued by the United States with a value of two hundred and fifty cents, or two dollars and fifty cents. It was given its name in the Coinage Act of 1792, as a derivation from the US ten-dollar eagle coin.
1796 "Turban Head" or "Capped Bust" quarter eagle (no stars)
1796 "Turban Head" or "Capped Bust" quarter eagle (with stars)
1835 "Classic Head" quarter eagle
The 1848 "Liberty Head" quarter eagle punch-marked "CAL"