High Quality Content by WIKIPEDIA articles! The Indian Head gold pieces or Pratt-Bigelow gold coins were two coins, 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 then again in 1925–1929, and the half eagle from 1908 to 1916, and then again in 1929. The pieces remain the only US circulating coins with recessed designs. The coins were the final ones for these denominations as coins struck for circulation, ending series which had begun in the 1790s.