1960s paperback. The cover image is split horizontally: the right half is bright turquoise with bold black title lettering “THE MAN FROM U.N.C.L.E.” and a black circle marked “No.2” in red. Below it runs the blurb “THRUSH’s fiendish threat to destroy the world challenges U.N.C.L.E.’s top pair of operatives in this new suspense adventure by Harry Whittington,” with “THE DOOMSDAY AFFAIR” in large white letters on the right. The left half shows a color photograph of two men in a control-room setting: one in a black turtleneck and sunglasses leans forward aiming a rifle, while the other, in a dark suit, looks upward from below. A vertical white strip on the left reads “A SOUVENIR PRESS/FOUR SQUARE BOOK”; the top-left corner shows the price “3/6.” There is a pen mark on the cover, the corners and edges show some wear.