The ornamental design for a mountingrack of auxiliaryrear-view mirror, as shown and described.
FIG. 1 is a perspective view of a mounting rack of auxiliary rear-view mirror showing my new design;
FIG. 2 is a front view of the design;
FIG. 3 is a rear view of the design;
FIG. 4 is a left side view of the design;
FIG. 5 is a right side view of the design;
FIG. 6 is a top view of the design; and
FIG. 7 is a bottom view of the design; and,
FIG. 8 is a perspective view showing mounting rack of auxiliary rear-view mirror.
The broken line showing of the rear-view mirror assembly is included for the purpose of illustrating environmental structure and forms no part of the claimed design.