Far too much!
Aunt Sally, I was on a rugby tour to The Hague that weekend, and so had to battle with a) a headache, b) a change from pounds shillings and pence to guilders, and c) a change from both sorts of money to pounds and pence, all in seventy-two hours!
I still have a box of matches and a tin which used to hold those fabulous long cigars, much loved by TV detectives way back then...
Hardly chicken feed. I know, but a story about the big change, nevertheless!