Exterior rearview mirror

FIG. 1 is a perspective view of an exterior rearview mirror showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof;

FIG. 8 is an enlarged view of the indicated portion in FIG. 2 with a pattern for warning light;

FIG. 9 is an enlarged view of the indicated portion in FIG. 2 with another pattern for warning light;

FIG. 10 is an enlarged view of the indicated portion in FIG. 2 with another pattern for warning light;

FIG. 11 is an enlarged view of the indicated portion in FIG. 2 with another pattern for warning light; and,

FIG. 12 is an enlarged view of the indicated portion in FIG. 2 with another pattern for warning light.

The dashed broken lines in FIGS. 1, 3-7 illustrate portions of the article that form no part of the claimed design. The dashed broken lines in FIGS. 8-12 illustrate the patterns for warning light that form no part of the claimed design.