2017-T5, 2017 U.S. Test Design Christmas Seals, As Required Strip of 7 Designs, VF, MNH. Issued 2017 by the American Lung Association (ALA). Designed by Sam Timm/Wildwings Licensing Multicolored, self-adhesive, serpentine die cut, all images trimmed in red within white border. Christmas Seals 2017 at bottom of each seal.
These are test designs. Since 1979, the American Lung Association has issued test designs to determine the design of the national seal for the following year.
Christmas Seals are also known as TB Charity Seals, and are usually classified as Charity Seals, or Cinderella Stamps.