LONDON—Christie’s finished out the London evening-auction season with a reassuring sale of postwar and contemporary art that realized £19,063,350 ($31,778,604). That compares to pre-sale expectations of £17.4–24 million for the 40 lots offered, of which all but five sold, for an impressive sold rate of 88 percent by lot and 86 percent by value. Of the successful lots, four hurdled the million-pound mark, and 11 made over a million dollars.