Abstract: A transparent face plate is mounted to a back plate in parallel spaced relationship by double face adhesive strip material extending about the facing edge portions of the back plate and face plate, leaving a pocket between the back plate and face plate. The adhesive strip material does not extend across one common edge portion of the back plate and face plate so that a slot is formed between the plates and a sign plate can be slid through the slot, into and out of the pocket. A layer of opaque material is applied to the inside surface at the edge portions of the face plate to form an opaque border about the sign assembly which hides the double face adhesive strip from view through the face plate, and the opaque material extends beyond the adhesive strip material inwardly with respect to the pocket of the sign assembly so as to hide the perimeter of the sign plate from view through the face plate.