FIG. 1 is an isometric view of the packing case embodying our new design;

FIG. 2 is a left side view of the packing case shown in FIG. 1, the right side view being a mirror image thereof;

FIG. 3 is a front view of the packing case shown in FIG. 1, the rear view being a mirror image thereof;

FIG. 4 is a top view of the packing case shown in FIG. 1; and,

FIG. 5 is a bottom view of the packing case shown in FIG. 1.

The broken lines shown in the drawings are for illustrative purposes only and form no part of the claimed design.