Product Details This is a stunning Ultra High Relief coin with a worldwide limited mintage of only 777 pieces. Historically, vaults were built in the basements of banks where the ceilings were vaulted, hence the name. This coin is sold out at the mint. Coin Highlights: Contains 3 oz of .999 fine silver. Low mintage of only 777 coins. Comes in a frame box in the original capsule with a certificate of authenticity. Obverse: Depicts the portrait of Queen Elizabeth II by Ian Rank-Broadley surrounded by her name, the issuing nation, the denomination and the 2023 year-date. Reverse: Features a circular vault door with a combination lock and a rotary handle. Around the rim are long and short lines resembling a mechanical combination lock. Sovereign coin backed by the Cook Islands government.