1907-1, WX1, 1907 U.S. Red Cross Christmas Seals, Type 1, block of 4, VF, full gum, MNH. Size 19x19mm, perf. 14. Issued by the Delaware Chapter of the American Red Cross. Image of Red Cross, with text "Merry Christmas"
Fresh block of four (4) of the first U.S. Christmas Seal. Nicely centered with even margins outside through center, vertical perfs are shifted slightly right, but still well clear of the design.
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. 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.