Abstract: A device for exchanging a numbering and imprinting device having a numbering shaft for carrying numbering units thereon and provided with an associated inking unit in a printing press, for another numbering and imprinting device mounted on another numbering shaft, the exchanging device includes a swivelling device swivellable about a horizontal pivot axis extending parallel to the axis of the numbering shaft, the swivelling device being formed of gripper elements, arranged on a cross member and carrying respective left-hand and right-hand journal pins of the numbering shaft, the horizontal pivot axis being formed by the axis of the cross-member, and the cross-member being mounted longitudinally displaceably on a carriage guide secured to a machine frame located at an end of the printing press, the carriage guide extending parallel to the axis of the numbering shaft.