The ornamental design for a wallsconce, as shown and described.
FIG. 1 is a perspective view of a wall sconce comprising the new design showing the first embodiment, configured with a crystal bobeche shown in dashed lines;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a right side elevational view thereof, a left side elevational view being a mirror image thereof;
FIG. 4 is bottom view thereof;
FIG. 5 is a perspective view of the wall sconce showing the second embodiment, configured with a plain bobeche shown in dashed lines.
FIG. 6 is a front elevational view thereof;
FIG. 7 is a right side elevational view thereof, a left side elevational view being a mirror image thereof; and,
FIG. 8 is a bottom view thereof.
The broken lines in the figures are for illustration purposes only and form no part of the claimed invention.