Vaults are an integral part of the building in which they are located, with armored walls and a door secured with complex locks, they hold the items we find most precious. Historically, vaults were built in the basements of banks where the ceilings were vaulted, hence the name. Nowadays they are also common in other buildings where valuables are kept, such as post offices, grand hotels, rare book libraries and certain government ministries. During its beginnings, vault technology evolved into an arms race with bank robbers. While crafty burglars kept finding new ways to break into vaults, the manufacturers of them came up with innovative solutions to prevent them from doing so. What would you keep in your vault? Smartminting® (Ultra High Relief). 2023 Cook Islands Vault 3oz Silver Proof Coin. ITEM SPECIFICS YEAR OF ISSUE: 2023 ISSUING COUNTRY: Cook Islands WEIGHT: 3 oz COMPOSITION. Sorry, our items are NOT available for pick-up. No additional information at this time. You might also like. 2022 South Korea Chiwoo Cheonwang 1oz Silver BU Medal. 2023 Sweetheart Candy 3pc 30g Silver Set. 2022 Palau Lotus Flower 2oz Silver Colored Proof Coin. 2022 Palau Pillars of Creation & Black Hole 3oz Silver Black Proof Coin.