FIG. 1 is a left front top perspective view of the marker holder;

FIG. 2 is a front bottom perspective view thereof;

FIG. 3 is a rear bottom perspective view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a rear view thereof;

FIG. 8 is a top plan view thereof;

FIG. 9 is a bottom plan view thereof;

FIG. 10 is a front bottom perspective view thereof with a stamper marker shown in broken lines.

The broken lines showing the stamper marker are for illustrative purposes only and forms no part of the claimed design.