Abstract: A display case being rectangular in a plan elevation, characterized by side walls and a door, each consisting of a glass panel (3,4,5,6) of equal thickness having side edges abutting at each other and having fastening means (16,17), some of them being fastened to an upper and a lower frame (1,2) respectively, the outer surfaces of the upper and lower frames (1,2) ending at a distance from the outer surfaces of the glass panels which distance is at least half of the thickness (25) of one of the glass panels, each one of the glass panels at one end abutting with its inner surface at the end face (21) of the neighboring glass panel, and at its other end (22) abutting with its end face (26) at the inner surface of the glass panel neighboring that other end, and that the fastening means (16,17) of the glass panels (3,4,5,6) are not protruding over the outer surface of their glass panel.There also is described a modular display system consisting of several such display cases.