49-2x, WX146, 1949 U.S. Christmas Seals, pm S, full gum, F, MNH. Issued 1949 by the National Tuberculosis Association (NTA). Designed by Herbert M. Meyers, image of dove and holly. Fresh, firm paper, bright colors, full gum, never folded, shipped flat. Scan is of a sheet.
Sheet of 100 (10x10), green light blue, red, and dark blue. Seal size: 23x17mm. Perf. 121/2. Printer's Mark: "S" in the light blue background, in the lower left corner of seal #56.
1949 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.