In front of a delicatessen, an art connoisseur noticed a mangy little kitten lapping up milk from a saucer.
The saucer, he realized with a start, was a rare and precious piece of pottery.
He strolled into the store and offered two dollars for the cat.
"It's not for sale," said the proprietor.
"Look," said the collector, "that cat is dirty and undesirable, but I'm eccentric. I like cats that way.
I'll raise my offer to ten dollars."
"It's a deal," said the proprietor, and pocketed the money.
"For that sum I'm sure you won't mind throwing in the saucer," said the proprietor firmly.
"That's my lucky saucer. From that saucer, so far this week I've sold 34 cats."