2006-T3x, 2006 U.S.Christmas Seals Test Design Sheet, R07-CSCS-4-27, VF, MNH. Shipped flat.
Issued 2006 by the American Lung Association (ALA). Designed by Katie Atkinson. Images of Dove, Houses, Snowflake & Children with siiver foil border. Sheet of 56 (8x7) seals with margin on four sides. Five designs, serpentine die cut, sel-adhesive. R07-CSCS-4-27 in bottom margin. Silver margin scans much darker than actual color. Back paper with green printed "History of the First Christmas Seal."
Christmas Seals are also known as TB Seals, and are usually classified as Charity Seals, or Cinderella Stamps.