Collectible coins, particularly dimes from the United States, include various types such as the 10-cent denomination, commonly known as dimes. The 1989 Denver Mint issue of dimes features the iconic Barber or Roosevelt designs. Dimes from specific years and mints can vary in value based on factors such as rarity, condition, and demand among collectors. A Roll of 1989 Denver dimes would contain 50 coins and be of interest to numismatists focusing on modern U.S. coinage.