The classic short story "After Twenty Years" tells of two friends, Jimmy Wells and Bob, who arrange to meet in front of a restaurant they used to frequent together after being separated for 20 years. Jimmy Wells, who has since become a policeman, strolls up and talks to the waiting Bob, who does not recognize him. He then leaves, and someone else approaches and introduces himself as Jimmy Wells. When they come into the light, though, Bob realizes that it is not Jimmy. As the policeman arrests Bob, he hands him a note from Jimmy, who was the first policeman that Bob had talked to earlier.
Jimmy Wells, the policeman, is described as "a fine-looking cop," who appears "strong and important." That's all the description that is given of Jimmy Wells, possibly because the surprise ending of the story hinges on the fact that Bob doesn't realize the deception at first, and O. Henry doesn't want to draw attention to Wells's appearance.
Bob, however, is described in more detail. O. Henry writes that he has a "colorless square face with bright eyes," and that near his right eye is a little white mark. Bob wears a large jewel in his necktie and carries an expensive watch covered in small jewels. The reader also understands through the dialog that Bob is a criminal who is important enough to be wanted in several states.