1917-1.6, WX19a, 1917 U.S. National Christmas Seals, Plate A, block/4, VF, MNH. Plate A, P/4S, perf. 121/2, fresh, block of four (4). Centering nearly perfect, perfs just touch bottom frame lines.
Christmas Seals are also known as TB Charity Seals, and are usually classified as Charity Seals, or Cinderella Stamps.