OK the fluctuation due to natural market forces, supply & demand, doesn't faze me. And the first two centuries of our nations founding, when we used silver & gold as money, saw very little inflation or fluctuation. I once saw a graph of this; was virtually a flat line until central banking came along. It's the other type of depreciation that bothers me.
Yes, I'm thinking a database of the NON-debased coins, shikamaru.
BTW, I scored a copy: