https://www.livescience.com/archaeology/romans/rare-hoard-of-roman-era-coins-discovered-in-german-mountains-miles-from-the-empires-frontlines
That's a lot of coins...
It's also a lot of coins that are hoarded for their fiduciary value, not their silver content!
As the late Douglas Adams might have observed, "This is what happens when you are so mind-boggling primitive that you have yet to invent banks."
I suppose it beats banging the rocks together...
I prefer digital watches....