The million pound banknote
He received it with a smile. It was one of those large smiles which goes all around the face. There are folds in it, and wrinkles, and spirals, and looks like where you have thrown a brick in a pond. Then when he caught a glimpse of the banknote this smile froze solid. His face turned yellow, and the smile looked like those wavy, wormy spreads of lava which you find hardened on the side of Vesuvius.
I never before saw a smile which froze into place as this one did. The man stood there holding the bill, and looking like that, until the proprietor hustled up to see what was the matter. He said, briskly: 'Well, what's up? what's the trouble? What does the customer still need? Come, come; get him his change, Tod; get him his change.'