1920-29 U.S. National Christmas Seal Block Collection. There are ten (10) blocks of four (4). This set is fresh, with full gum, P4S, F/VF, MNH. Issued by the National Tuberculosis Association (NTA)
Excellent start, or addition to your collection. Instead of collecting full sheets, blocks of four (4) are an excellent alternative. Scan is an example of the seals in the collection.
Christmas Seals are also known as TB Charity Seals, and are usually classified as Charity Seals, or Cinderella Stamps.