Abstract: A multi-image sign display (10,100) controllably interrelates a pair of controllable illumination means (22,24), for providing different selectable media effects from first and second displayable scenes (14,16) dependent on the first and second lighting effects which enable a controllable display of the second scene (16) visually perceptible through the first scene (14) dependent on these effects, such as a visually perceptible cross-dissolve effect, ort a full on/full off effect.