1929-68 U.S. National Christmas Seals, As Required Imperforate Proof Collection, full gum, F, MNH. Issued at Christmas by the National Tuberculosis Association (NTA). The NTA issued Christmas Seals 1920-68. This is the collection as required by the various catalogs and stamp albums.
This collection consists of the following: pairs: 29-53, 55, 58-59; blocks of 4: 54, 56-57, 60-65; blocks of 8: 66, 68; strip of 20: 1967. Collection is fresh, with full gum, and MNH. Scan is an example of the contents of this seal collection. However, the scan does not fully illustrate the vibrant colors of the collection.
Imperforate seals or sheets have no perforations or rouletting at all.
Christmas Seals are also known as TB Charity Seals, and are usually classified as Charity Seals, or Cinderella Stamps.