ironwood, your crystal ball (or your balls) is as good at predicting the future as anyone else's. That's a fact.
I've been thinking about a big bar. But the problem is, should the economy collapse and anarchy happen, what are you going to do with it? What the hell are you going to be needing that will cost that much? I think most of our daily needs can be handled with small silver (maybe gold) coins, which can be used to buy food, medicine, fuel, ammunition, and the other practical things we'll be needing when the governments go bankrupt and out of business.
I have some Mormon friends who have some big silver bars. They couldn't find a place to stash them, so they painted them black and are using them in plain sight as door stops in the house.