81-2.1x, WX271, 1981 ALA National Design U.S. Christmas Seals, pm F, full gum, F, MNH. Although over 20 yrs old, fresh, full gum, never folded, shipped flat. Scan is of a sheet.
Issued by the American Lung Association. Designed by Norman Rockwell. Image of Grandpa on rocking horse with child. Dated 1981, sheet of 54 (9x6), multicolored. Seal size: 24x30mm, perf 121/2. With dull gum, dull paper. Printer's Mark: "F" on seal #23. There are no slogan or portrait seals.
Christmas Seals are also known as TB Seals, and are usually classified as Charity Seals, or Cinderella Stamps.