FIG. 1 is a perspective view of a mirror bracket, showing a first embodiment of my new design;
FIG. 2 is an enlarged perspective view of FIG. 1;
FIG. 3 is a front elevational view of FIG. 2;
FIG. 4 is a rear elevational view of FIG. 2;
FIG. 5 is a left-side elevational view of FIG. 2;
FIG. 6 is a rear elevational view of FIG. 2;
FIG. 7 is a top plan view of FIG. 2;
FIG. 8 is a bottom plan view of FIG. 2;
FIG. 9 is a perspective view of a second embodiment thereof;
FIG. 10 is an enlarged perspective view of FIG. 9;
FIG. 11 is a front elevational view of FIG. 9;
FIG. 12 is a rear elevational view of FIG. 9;
FIG. 13 is a left-side elevational view of FIG. 9;
FIG. 14 is a rear elevational view of FIG. 9;
FIG. 15 is a top plan view of FIG. 9; and,
FIG. 16 is a bottom plan view of FIG. 9.
In the drawings, the broken lines in FIGS. 1 and 9 depict a vehicle and form no part of the claimed design.