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$1 One Dollar Gold Coins

Type 1 - $1 One Dollar Gold Liberty Head Information
Coinage of the gold dollar was authorized by the Act of March 3, 1849. The weight was 25.8 grains, .900 fineness. Type I struck until 1854, is known as the Liberty Head or small sized type (Type 1).
[phpbay]Liberty, 4, “149937″, “indian 1855 1856″, “”, “”, “50″[/phpbay]

Type 2 - $1 One Dollar Gold Indian Princess Information
In 1854, the dollar coins were made larger in diameter and thinner. The design was changed to a feather headdress on a female, generally referred to as the Indian Princess Head (Type 2).
[phpbay]Type 2, 4, “149937″, “1849 1850 1851 1852 1853 III type3 type1″, “”, “”, “50″[/phpbay]

Type 3 – $1 One Dollar Gold Princess Information 
In 1856, the type was changed slightly by enlarging the size of the head (Type 3).
 [phpbay]Type 3, 4, “149937″, “1849 1850 1851 1852 1853 type2 type1 typeI typeII”, “”, “”, “50″[/phpbay]

One Dollar Gold Coins Design & Specifications 
Designer James B. Longacre.
Weight 1.672 grams.
Composition .900 gold, .100 copper (net weight .04837 oz. pure gold).
Diameter 13mm; reeded edge.
Mints: Philadelphia, Charlotte, Dahlonega, New Orleans, San Francisco.