Collectible coins, including those from the United States, often hold historical and numismatic significance. The five cents nickel, notably the Jefferson Nickel, was first minted in 1938 and remains a popular collectible. The term "Half Dime" refers to a coin that was minted in the U.S. before the nickel, specifically produced from 1792 to 1873, which also has a dedicated collector base. The 1966 Jefferson Nickel, part of a series that pays tribute to Thomas Jefferson, is significant for its design and composition changes, incorporating a portrait of Jefferson and the Monticello estate on the reverse side.

Item Denomination Series Year Mint
1966-- (Unknown) Jefferson Nickels 5¢ (Five Cents, Nickel, Half Dime) Jefferson Nickels 1966 Unknown
1966-S (San Francisco) Jefferson Nickels 5¢ (Five Cents, Nickel, Half Dime) Jefferson Nickels 1966 San Francisco
United States of America 1966 Philadelphia Jefferson Nickels 5¢ 5¢ (Five Cents, Nickel, Half Dime) Jefferson Nickels 1966 Philadelphia