I also have the 6oz version! The item "Niue 2014, Fortuna Redux Mercury 3D, $25, 3 Oz SILVER proof cylinder shaped coin" is in sale since Thursday, May 29, 2014. 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.