1947-4xA, WX136, 1947 U.S. National Christmas Seals, pm U, Sheet/100, F, MNH. Fresh, firm paper, vibrant colors, never folded, shipped flat in an archival safe protector.
Designed by Raymond H. Lufkin. Sledge with oxen. Sheet of 100 (10x10), red, green, brown, and blue. Seal size: 22x17mm. Perf. 121/2. Printer's Mark: brown "U" in the lower left corner of the white background above the letter "M" of "MERRY" on seal #56.
1947 Christmas Seals were printed by four printers. The letter "E" "D" "S" or "U" appears on seal #56.
Christmas Seals are also known as TB Charity Seals, and are usually classified as Charity Seals, or Cinderella Stamps.