FIG. 1 is a front three-dimensional view of a first embodiment of a sign holder showing my new design;
FIG. 2 is a front elevational view of the sign holder depicted in FIG. 1;
FIG. 3 is a rear elevational view of the sign holder depicted in FIG. 1;
FIG. 4 is a plan view of the sign holder depicted in FIG. 1;
FIG. 5 is an underneath view of the sign holder depicted in FIG. 1;
FIG. 6 is a side elevational view of the sign holder depicted in FIG. 1;
FIG. 7 is an elevational view of the side opposite to that shown in FIG. 6;
FIG. 8 is a front three-dimensional view of a second embodiment thereof;
FIG. 9 is a front elevational view of the sign holder depicted in FIG. 8;
FIG. 10 is a rear elevational view of the sign holder depicted in FIG. 8;
FIG. 11 is a plan view of the sign holder depicted in FIG. 8;
FIG. 12 is an underneath view of the sign holder depicted in FIG. 8;
FIG. 13 is a side elevational view of the sign holder depicted in FIG. 8; and,
FIG. 14 is an elevational view of the side opposite to that shown in FIG. 13.
The broken lines illustrate portions of the sign holder and form no part of the claimed design.