1911-1, WX7, 1911 U.S. Red Cross Christmas Seal, Type 1, full gum, VF, MNH. Issued 1911 by the American National Red Cross. Designed by Anton Rudert. Image of a house within heavy red circle.
The 1911 Type 1 Christmas Seal has a circular frame 22mm in diameter, the house is solid green with red windows, and a heavy red circle.
Typographed by Eureka Speciality Printing Co., perf. 12. Perfs just clear of design at bottom.
Christmas Seals are also known as TB Charity Seals, and are usually classified as Charity Seals, or Cinderella Stamps.