Collectible coins, particularly those from the United States, encompass various denominations and historical contexts. The five-cent nickel and half dime are notable examples, with the Seated Liberty Half Dime minted starting in 1837. The specific 1840 issue of the Seated Liberty Half Dime, produced in New Orleans, is recognized for its unique mint mark and historical significance, making it a sought-after item among collectors. These coins often vary in value based on condition, rarity, and demand in the numismatic market.

Item Denomination Series Year Mint
1840-O (New Orleans) Seated Liberty Half Dimes 5¢ (Five Cents, Nickel, Half Dime) Seated Liberty Half Dimes 1840 New Orleans