1931 U.S. National Christmas Seals, Imperforate pair, full gum, F, MNH.
Issued 1931 by the National Tuberculosis Association (NTA). Designed by John W. Evans. Images of carriage and horses.
Imperforate Pairs are seals from sheets that have no perforations or rouletting at all. Proofs and essays are most likely imperforated.
Christmas Seals are also known as TB Charity Seals, and are usually classified as Charity Seals, or Cinderella Stamps.