This amazing 3 Oz Silver coin is dedicated to Alcatraz Island, a small island located in the San Francisco Bay, California, famous for its former federal prison. The coin has Ultra High Reliefs realized with Smartminting technology, has Proof quality and comes in an elegant case, along with the Certificate of Authenticity. Limited mintage of 750 pieces worldwide. The reverse of the coin is dedicated to the aerial representation of Alcatraz Island, which served as a military fortress, a federal prison, and a site for political protests. The island is best known for the federal prison that operated there from 1934 to 1963. During this time, Alcatraz housed some of the most notorious criminals in American history, including Al Capone and Robert Stroud. The obverse of the coin shows the Effigy of Queen Elizabeth II, along with the inscriptions: "ELIZABETH II" - the name of the Queen, "COOK ISLANDS" - the issuing country and "20 DOLLARS" - the face value. Specifications: Item 30400 Country Cook Islands (the) Year 2023 Face Value 20 Dollars Metal Silver.9999 Weight 3 oz Size 50 mm Quality Proof Mintage 750 Technique smartminting® (Ultra High Relief)