The ornamental design for postage label, as shown and described.
FIG. 1 is a top plan view of a postage label showing my new design, the
stylized N logo at the upper left corner being in the form of a watermark
or the like;
FIG. 2 is a right side elevational view thereof, the left side elevational
view being identical;
FIG. 3 is a rear elevational view thereof, the front elevational view being
identical; and,