The ornamental design for the mobile display rack, as shown and described.
FIG. 1 is an enlarged perspective view of a mobile display rack showing my
new design, the indicia shown in broken lines on the upper sign portion
of the rack is for illustrative purposes only.
FIG. 2 is a perspective view thereof, with the handle extended for use.
FIG. 3 is a front elevational view thereof, taken from the left of FIG. 2.
FIG. 4 is a side elevational view thereof, the rear and side opposite that
shown in FIG. 4 are identical to their counter parts with the exception
of the position of the handle.