1910-1, WX6, 1910 U.S. Red Cross Christmas TB Seal, F, MNH. Size 22x22mm, perf. 12.
The 1910 Christmas TB Seal was issued and sold by the American National Red Cross. There was just one type. Scan is an example of the seal. Scan of front and back available upon request.
Note from Green's Catalog: "The designs this year are spaced extremely close together within the sheet and examples with the designs clear of the perforations on all four sides are scarce."