Collectible coins from the United States, particularly those minted in 2000 at the Denver Mint, may include various denominations such as dollars or other specified coins. A roll typically contains a set quantity of coins, often 50, and can be sought after by collectors for their historical significance, mint marks, and condition. The intrinsic value of these coins can be influenced by factors such as rarity, demand, and the specific design features associated with that year and mint.