17-3.2x2, WX19, 1917 U.S. Red Cross Christmas Seals Sheet, Type 3, full gum, Avg., NH. Sheet has never been folded, shipped flat. Scan of a full sheet. Sheet is larger than scan, part of a row not scanned.
Issued 1917 by the American National Red Cross. Designed by Thomas M. Cleland. Typographed by Eureka Specialty Printing Co. Plate C with union label opposite seal #1, position 3. Sheet of 100 (10x10), SE4S, red and green. Seal size: 20x22mm, perf. 12.
Christmas Seals are also known as TB Charity Seals, and are usually classified as Charity Seals, or Cinderella Stamps.