Collectible coins, such as the 2008 United States One Dollar coins, often fall into categories like proof sets, which are specially made for collectors with high-quality strikes and mirrored surfaces. The 2008 proof sets include coins that are produced using polished dies and are struck at least twice, resulting in a finish that showcases intricate details. Collectors often seek these proof sets not only for their aesthetic appeal but also for their potential appreciation in value over time. The United States Mint produced the 2008 proof set to commemorate various designs and themes, making them significant for both numismatic and historical reasons.

Item Denomination Series Year Mint
2008-S $1 Presidential Proof Set 4 Coins $1 (One Dollar) Proof Sets 2008 San Francisco