The ornamental design for clock face, as shown and described.
FIG. 1 is a front elevational view of a clock face showing our new design,
portions of which are lined for colors; the rear being substantially flat
and unornamented;
FIG. 2 is a top plan view thereof, the bottom plan being a mirror image
thereto;
FIG. 3 is a right side elevational view thereof, the left side being a
mirror image thereto;
FIG. 4 is a fragmentary cross-sectional view as taken from line 4--4 of
FIG. 1.