The 1968 Denver nickel, part of the United States Coinage, is a five-cent coin that features the profile of Thomas Jefferson on the obverse and Monticello on the reverse. Collectors often seek out rolls of these coins for their numismatic interest, which can be influenced by the coin's condition, rarity, and demand. The Denver mint mark, represented by a "D" on the coin, indicates where it was produced, enhancing its collectible value. Nickels from this era are typically made of a nickel-copper alloy and can be found in various states of preservation, impacting their market value.