One of my relatives happens to work in the cage of small casino. Here are some of the notable bills that he bought out of customer transactions:
I'd be terribly inefficient working in that environment. Could you imagine everything that get dumped on a counting table and then need to be sorted? This doesn't even include all of the 40% and 90% silver has saved and sent me as well.
Imagine working the cage back when they still used silver dollars and having the chance to cherry pick through tens of thousands of coins (while you got paid to do it) ...