2023 1 oz Mexico Silver Libertad Proof Coin in Capsule Limited Mintage! The 2023 1 oz Mexico Silver Libertad Proof Coin is a rare and valuable collectible coin minted by the Mexican Mint. This coin features a high purity of. 999 pure silver, making it a desirable choice for collectors and investors alike. With a low mintage of pieces, this coin is a limited edition piece that is sure to be a prized addition to any coin collection. Its proof strike type adds to its visual appeal, making it a stunning and unique piece from the Mexican Libertad series.