Collectible coins, particularly the 1945 Denver nickel, are part of a broader category that includes various denominations and mint marks. The 5 cent nickel, produced by the United States Mint, features the image of Thomas Jefferson on the obverse and Monticello on the reverse. The 1945 Denver nickel is notable for its production at the Denver Mint and is sought after by collectors for its historical significance and relatively low mintage compared to other years. Coins from this era can vary in condition, with higher-grade specimens often commanding premium prices in the collectibles market.