The 1955 Denver nickel, often referred to as a "5c Roll" coin, is a specific type of collectible coin from the United States. It is part of the Jefferson Nickel series, which was first minted in 1938. The Denver mint produced a limited number of these coins, making them more sought after among collectors. The design features a portrait of Thomas Jefferson on the obverse and Monticello on the reverse. Condition and rarity are key factors that influence the coin's value in the collectible market.