This 1851-O G$1 Gold Dollar has been certified and graded by NGC as MS64. NGC’s encapsulation guarantees the coins MS64 Condition. The gold dollar, also known as a gold one-dollar piece, is a gold coin that was struck by the United States Mint from 1849 to 1889. The coin had three variations over its lifetime. Type 1: Liberty wearing a coronet (1849-1854), Type 2: Liberty as an Indian Princess (1854-1856) and Type 3: Large Head (1849-1854), all designed by Mint Chief Engraver James B. Longacre. Coin Specifications: Denomination: $1 Designer: James B. Longacre Edge Type: Reeded Mint/ Mint Mark: Charlotte (C), Dahlonega (D), New Orleans (O), San Francisco (S) and Philadelphia (No Mint Mark) Obverse: Liberty Head wearing a coronet, Liberty Indian Princess or Large Head Liberty Reverse: Displays an open or closed wreath (depending on the year) with 1 Dollar and date of the coin Metal Type: Gold Weight: .04837 troy oz Diameter: Type 1, 12.7 mm. Type 2 and 3, 14.3 mm Brand: U.S. Mint   *Images are of actual coin you will receive. View NGC Certificate