FIG. 1 is a side perspective view of a wall coving showing my new design;
FIG. 2 is a rear perspective view of the wall coving of FIG. 1;
FIG. 3 is a side perspective view of the wall coving of FIG. 1; and,
FIG. 4 is a front perspective view of the wall coving of FIG. 1.
The broken lines are provided for illustrative purposes only, and form no part of the claimed design.