Collectible coins in the United States, particularly the 1 One Dollar coin, can vary significantly based on their minting location and condition. Proof sets, such as those from 2019 minted in San Francisco, are specially produced coins that feature a mirrored finish and are struck multiple times to enhance detail. These sets are often sought after by collectors for their quality and limited mintage, making them valuable additions to numismatic collections.

Item Denomination Series Year Mint
2019-S $1 American Innovation Proof Set 4 Coins $1 (One Dollar) Proof Sets 2019 San Francisco