Open-closed sign structure

An open-closed sign structure fabricated and assembled from a pair of like sign body sections arranged back to back to form a sign body and having an area spaced apart between them, the sign body carrying a sign face visible from either side, wherein a shutter consisting of a pair of like shutter sections keyed together at a corresponding edge of each shutter section is engaged for slidable movement between the sign body sections, each shutter section carrying indicia visible from one face of the shutter selectively on opposed edges of the sign body depending upon the position of the shutter relative to the sign body, and fasteners for holding the sign body sections together and the shutter slidably engaged therebetween. The fasteners may also have mounting members, such as suction cups, for securing the assembled sign to a surface. The shutter and sign body also have a cam and detente assembly for urging the shutter to remain in a predetermined selected position visible from a selected edge of the sign body. The sign face may consist of ridged magnetic panels, one carried by each of the sign body sections, and magnetized letter indicia adapted for movable securement on the sign face aligned on the magnetic panel ridges.