The ornamental design for a magnetic signholder, as shown and described.
FIG. 1 is an upper perspective view of the magnetic sign holder showing my design.
FIG. 2 is a front elevation view thereof,
FIG. 3 is a back elevation view thereof;
FIG. 4 is a side elevation view thereof;
FIG. 5 is an opposite side view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is still another upper perspective view thereof, showing an open position of a tab portion
FIG. 9 is a second embodiment of FIG. 1, the only difference being the dimensions of width and length, it being understood that all other views of surfaces are the same as those of the first embodiment with corresponding dimensions; and,
FIG. 10 is a third embodiment of FIG. 1, the only difference being the dimensions of width and length, it being understood that all other views of surfaces are the same as those of the first embodiment with corresponding dimensions.