Abstract: A holder for receiving a placard with indicia, comprising a unitary upper member having a backing and a front face, at least a portion of which is transparent, the placard to be positioned therebetween. The front face and backing each have a lower edge portion oppositely positioned. An outwardly-directed protuberance extends above, and generally the length of, each of the lower edge portions. Each protuberance can have an eave. A recessed top portion of a support member receives and engages the lower edge portions. The engagement of the upper member to the support can be by way of sliding or downward snap- or press-fit engagement. The lower edge portions may inwardly dovetail (whether to the point of releasable interlock). A first vertical-side of the backing can be sealed along a first vertical-side of the front face and the recessed top can have open and closed ends.