I got to thinking, though, about handling large amounts of cash. I once had to bank £7000 in takings from a shop I was managing, which is certainly the most British currency I've ever handled. But in the wild days of my time in Bosnia, I routinely did the Sarajevo-Banja Luka run with more than that in Deutschmarks, probably going up to DM 50,000 occasionally, though I don't remember exactly.
These days, so much is done electronically that it is rare for me to have even a hundred euro on me in cash (muggers please note).
So, what's the most worryingly vast amount of cash you have ever handled?