32 mm x 22.10 mm. Have a look at my other auctions! Sellers: Add a FREE map to your listings. The item "Niue 2013, Fortuna Redux Mercury 3D, $50, 6 Oz SILVER proof cylinder shaped coin" is in sale since Wednesday, May 22, 2013. This item is in the category "Coins & Paper Money\Coins\ World\Australia & Oceania\Other Oceania Coins".The seller is "www-space-coins-com" and is located in space-coins-com. This item can be shipped worldwide.