The ornamental design for a sanitary handshield, as shown and described.
FIG. 1 is a perspective view of our ornamental design for a sanitary hand shield.
FIG. 2 is another perspective view of our ornamental design for a sanitary hand shield.
FIG. 3 is an end elevation view of our design.
FIG. 4 is a bottom plan view of our design.
FIG. 5 is a top plan view of our design; and,
FIG. 6 is an end elevation view of our design. The broken lines in the drawing represent environmental structure only and form no part of the claimed design.