2023 DC Villains the Riddler 3oz Silver Coin COA 1000 Mintage. 2023 DC Villains: The Riddler 3 oz Silver Coin. Limited-edition collectible minted by the. For the country of. This proof coin is struck from. 99.9% fine silver. And features a colorized depiction of the iconic Batman villain holding his signature cane. 3 Troy oz of. In his green question-mark ensemble and purple domino mask. The background includes detailed engravings inspired by his various appearances in. Public Seal of Niue, along with the face value and the 2023 year of issue. DC-themed collector’s box. Certificate of Authenticity (COA).