From Mint Sealed Box # 9. Why is a Certified coin a better investment? PCGS & NGC are the main two impartial Numismatic Grading Services in the world and is a guarantee that the coin is genuine and has been graded accurately and professionally.The sonically sealed solid plastic slabb is individually numbered so that the details of the coin(s) can be verified on a central database, and is also tamperproof. This item is in the category "Coins\Bullion/Bars\Silver Bullion\Coins". The seller is "the-lego-brothers" and is located in this country: GB. This item can be shipped to United Kingdom.