U.S. Postal Service issues stamp for irregularly sized cards and invitations

SCHAUMBURG, Ill., Aug. 16, 2025 /PRNewswire/ — Today, the U.S. Postal Service issued Luna Moth, a nondenominated stamp priced at the non-machineable surcharge rate, at the Great American Stamp Show here.

A pale green luna moth graces the new release, which is designed for use on irregularly sized envelopes such as square greeting cards, invitations or announcements.