The 1887 One Dollar Gold Coin is part of the United States Gold Dollar series, minted in Philadelphia. These coins, primarily composed of 90% gold and 10% copper, were issued to facilitate small transactions and are notable for their intricate designs, often featuring a Liberty head on the obverse and a wreath or depiction of other symbols on the reverse. The 1887 issue is particularly sought after by collectors due to its relatively limited mintage and historical significance in American numismatics.