1907-1.2, WX1, 1907 U.S. Red Cross Christmas Seal, Type 1, thin paper variety, Avg, NO GUM. Size 19x19mm, perf. 14. Scan of front and back available upon request.
The 1907 Christmas Seal was issued by the Delaware Chapter of the American Red Cross. There were two types: Type 1 - "Merry Christmas," and Type 2 - "Merry Christmas / Happy New Year." This seal is a Type 1, thin paper. The 1907 Christmas Seal was designed by Ms. Emily P. Bissell.
Christmas Seals are also known as TB Charity Seals, and are usually classified as Charity Seals, or Cinderella Stamps.