48-2x, WX140, 1948 U.S. Christmas Seals Sheet, pm S, full gum, F, MNH. Issued 1948 by the National Tuberculosis Association (NTA). Designed by Barry Bart, image of child by fireplace.. Fresh, firm paper, bright colors, full gum, never folded. Scan is of a sheet.
Sheet of 100 (10x10), yellow, light blue, red, and dark blue. Seal size: 261/2x20mm. Perf. 121/2. Printer's Mark: "S" to the left of the fireplace on seal #56.
1948 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.