Cook Islands 2017 Giant Windows of Heaven – Berlin Cathedral 3×3 oz Silver Coins. 280 gram of pure silver in proof quality. Coins with painted glass. Very low mintage – limited to only 999 pieces. At our discretion, we may opt to self-insure any order. Return item must be sent within 14 days after it has been received. We strive for 5 star service. Get Images that Make Supersized Seem Small. Tailor your auctions with Auctiva’s. Track Page Views With. Auctiva’s FREE Counter. The item “Cook Islands 2017 Giant Windows of Heaven Berlin Cathedral 3×3 oz Silver Coins” is in sale since Sunday, November 26, 2017. This item is in the category “Coins & Paper Money\Coins\ World\Australia & Oceania\South Pacific”. The seller is “mimi*store” and is located in Berlin. This item can be shipped worldwide.