116-T2x, 2015 U.S. Christmas Seals Test Design Sheet, R17-CSCS-4-10, VF, MNH. Issued 2016 by the American Lung Association (ALA). Designed by Richard Dewolfe/Porterfield's Fine Art Licensing. Images of a snowman, horse drawn sled, Santa, horse drawn sled with house, winter farm scene, white bear with cub, horses approaching farm, all with red frame within green border.
Sheet of 42 (6x7) seals, without gift tags, margin on all four sides. Dated 2016 with "R17-CSCS-4-10" in bottom margin. White margin with green border.
Ten Ways to Stay Healthy on the reverse of sheet.
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.