54-4x, WX169, 1954 U.S. Christmas Seals Sheet, pm U, full gum, F, MNH. Issued 1954 by the National Tuberculosis Association (NTA). Seals designed by Jorgen G. Hansen. Issued in se-tenant blocks of four seal designs alternating in the sheet: (1) girl, boy and Christmas tree, "Christmas" at bottom; (2) three children, "Greetings" at bottom; (3) similar to design 2, but "Christmas" at bottom; and (4) similar to design 1, but "Greetings" at bottom. Fresh, never folded, shipped flat. Scan is of a full sheet.
Sheet of 100 (10x10), yellow, black, green, and red. Seal size: 25x18mm, perf. 121/2. Printer's Mark: "U" located between the boy's feet on seal #56. "1 New York 14" Union label in margin over seal #10. Perforated margin at top inscribed "Tuberculosis Can Be prevented And Be Cured."
Christmas Seals are also known as TB Charity Seals, and are usually classified as Charity Seals, or Cinderella Stamps.