just carl is a very wise man and gave you the best advice on the subject... save your money and headache on the paperwork, just buy more coins and enjoy yourself and the hunt. If you are looking for a return on your investment, sure, slab away. If you are building a collection to share with your grandkids, like you have said, just buy more coins! To me, it's a no brainer, buy more coins, not plastic slabs. But, what do I know?