Display regions each include a plurality of reflection surfaces. The reflection surfaces are arranged at an average pitch of 1 µm and 300 µm inclusive in a direction in which the reflection surfaces are arranged. The display regions of each display region group include display regions that differ from one another in the normal direction of the reflection surfaces. Each display region group is configured to form, in the associated observation direction, an image that is unique to the display region group and composed of the image elements formed by the display regions of the display region group.