FIG. 1 is a front elevational view of the vertical/horizontal desktop sign holder illustrating the new design;

FIG. 2 is a right side view of the vertical/horizontal desktop sign holder illustrated in FIG. 1 (the left side view is a mirror image of FIG. 2);

FIG. 3 is a rear view of the vertical/horizontal desktop sign holder illustrated in FIG. 1;

FIG. 4 is a top view of the vertical/horizontal desktop sign holder illustrated in FIG. 1;

FIG. 5 is a bottom view of the vertical/horizontal desktop sign holder shown in FIG. 1;

FIG. 6 is a front perspective view of the vertical/horizontal desktop sign holder illustrated in FIG. 1; and,

FIG. 7 is a rear perspective view of the vertical/horizontal desktop sign holder illustrated in FIG. 1.

In the drawings, the broken lines represent features that form no part of the claimed design.