2013-T1x, 2013 U.S. Christmas Seals, Test Design Sheet, R14-CSCS-4-06, VF, MNH. Issued 2013 by the American Lung Association. Images of a Home, Snowman, Sleigh, Car, with silver foil border.
Designed by John Sloan/John Sloan Art. Sheet of 48 (8x6) seals, without gift tags, margin on all four sides, "Fighting for Air." Dated 2013 with "R14-CSCS-4-06" in bottom margin. Silver margin scans much darker than actual color.
The Christmas Seal Tradition 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.