Collectible coins are often categorized by their historical significance, rarity, condition, and demand among collectors. The Seated Liberty Dime, minted from 1837 to 1891, features a design of Liberty seated on a rock, surrounded by stars. The 1878 Seated Liberty Dime is a notable year for collectors, as it is part of the late series with variations in mint marks and production numbers. The One Dollar coins from the United States, especially those related to significant historical figures or events, are also popular among collectors.