The classic CND logo is a circle with one vertical diameter and two pendent radii (not to be confused with the Mercedes-Benz logo of three equidistant radii!). This was devised for the first Aldermaston demo in 1958, by the artist Gerard Holtom. He used a combination of the semaphore letters for “N” and “D” - nuclear disarmament - surrounded by a circle representing the world. It has since become recognized worldwide as a symbol for peace generally.