The ornamental design for a cubic picturedisplaysystem, as shown and described.
FIG. 1 is an exploded, top perspective view of the cubic picture display
system of this invention, showing a multi-cube receiving tray, with one
cube thereof poised for positioning within said tray, and a cover to be
received thereon;
FIG. 2 is a front view of the assembled cubic picture display system
according to this invention, where the rear and respective side views are
identical;