Header Card Mask

FIG. 1 is a front perspective view of a first embodiment of a header card mask showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a right side view thereof;

FIG. 8 is a front perspective view of a second embodiment of a header card mask showing my new design;

FIG. 9 is a front view thereof;

FIG. 10 is a rear view thereof;

FIG. 11 is a top view thereof;

FIG. 12 is a bottom view thereof;

FIG. 13 is a left side view thereof; and,

FIG. 14 is a right side view thereof.

The broken line showing of the header card mask is for the purpose of illustrating portions of the article that form no part of the claimed design.

The dashed lines on the header card mask of FIGS. 8 - 10 represent perforation lines that form no part of the claimed design.