The only reason to keep the coins sealed in the outer box is to someday send them in to a
TPG for a maximum 70, if for no other reason. If you saw the video that was posted elsewhere of the minting process of these giants, they are minted reverse side up then slides face down into a tray on a conveyer belt. Most bullion coins show minor obverse slide marks, the uncirculated coins rarely do because the vapor blasting process removes the minting imperfections, but not all. My first Grand Canyon 5oz uncirculated had a long diagonal scratch on the neck, so checking the sent coin is always a must because the quality control in the room with the Graebener press is hit or miss.