Collectible coins are numismatic items that are often sought after by collectors for their historical significance, rarity, or artistic design. In the United States, these coins can include various types such as state quarters, silver eagles, and commemorative coins, often marked with mint letters such as "P" for Philadelphia mint releases. Coins can be valued based on factors like condition, demand, and mintage, making them a popular investment and hobby within the United States of America.

Item Denomination Series Year Mint
(1857) P$20 Copper, Uniface Die Trial J-190 BN P$20 Patterns 1857 Philadelphia
1849 P$20 Brass Gilt J-118 P$20 Patterns 1849 Philadelphia
1859 P$20 Copper J-263 BN P$20 Patterns 1859 Philadelphia
1860 P$20 Gold J-272a P$20 Patterns 1860 Philadelphia
1861 P$20 Copper J-288 BN P$20 Patterns 1861 Philadelphia
1865 P$20 Gold J-452 P$20 Patterns 1865 Philadelphia
1866 P$20 Copper J-549 BN P$20 Patterns 1866 Philadelphia
1867 P$20 Copper J-604 BN P$20 Patterns 1867 Philadelphia
1868 P$20 Aluminum J-665 P$20 Patterns 1868 Philadelphia
1869 P$20 Copper J-784 BN P$20 Patterns 1869 Philadelphia
1870 P$20 Copper J-1038 BN P$20 Patterns 1870 Philadelphia
1871 P$20 Copper J-1176 BN P$20 Patterns 1871 Philadelphia
1872 P$20 Amazonian, Gold J-1250 CAM P$20 Patterns 1872 Philadelphia
1873 P$20 Copper J-1344 BN P$20 Patterns 1873 Philadelphia
1874 P$20 Copper J-1381 BN P$20 Patterns 1874 Philadelphia
1875 P$20 Copper J-1448 BN P$20 Patterns 1875 Philadelphia
1876 P$20 Gold J-1488 P$20 Patterns 1876 Philadelphia
1879 P$20 Quintuple Stella, Copper J-1642 RB P$20 Patterns 1879 Philadelphia
1884 P$20 Copper J-1738 BN P$20 Patterns 1884 Philadelphia
1885 P$20 Aluminum J-1756 P$20 Patterns 1885 Philadelphia
1906 P$20 Gold J-1773 P$20 Patterns 1906 Philadelphia
1907 P$20 Gold J-1905 P$20 Patterns 1907 Philadelphia
1907 P$20 Gold J-1909 P$20 Patterns 1907 Philadelphia
1908 P$20 Gold J-1922 P$20 Patterns 1908 Philadelphia