I disagree with most of that.
Are you looking to hold metal value or numismatic value?
Are you looking for a bartering currency?
Personally, I buy and store various silver rounds (1 oz, .999 fine silver) and it is what it is...an ounce of silver. They can be purchased from dealers for close to the spot price.
Here's the next part:
Who will keep all of this silver? You? Me? Hal Turner?