(57) A modular display system comprises a plurality of panels (64) interconnected along adjoining sides by interengaging hinge members (30) carried by the respective panels on the respective sides thereof and removable hinge pins (120, 122) extended through cooperating hinge members (30) of the adjoining panels to establish connections between the same. Each said hinge member (30) comprises an elongate part (32) adapted to be secured to a panel edge (64) and to extend along said panel edge and a bearing part or ring (34, 36) carried by the part (32) and projecting transversely therefrom to define a bearing axis extending parallel with the panel edge. The axial dimension of each bearing part (34, 36) is a sub-multiple of the length of the hinge member so that two or more such bearing parts of adjoining hinge members can be superimposed axially, with their bearing axes aligned, within the axial limits of a single hinge member. The system preferably includes a plurality of different types of such hinge members, the different types having said elongate parts (32) of the same length but having the bearing or ring parts (34, 36) at different longitudinal positions so that, with adjoining hinge members (30) of adjoining panels (64) at the same height, the respective bearing parts (34, 36) can overlie one another at different heights, but in axial alignment with one another.