1937-3x, WX89, 1937 U.S. National Christmas Seals Sheet, pm D, full gum, F, MNH. Fresh, firm paper, never folded, shipped flat. Please disregard label in scan as it is not attached to seals.
Sheet of 100 (10x10) seals, 96 regular seals with four slogan seals. Colors: yellow, black, red, blue. Seal size: 24x18mm, perf. 121/2. Printer's Mark: a black "D" in the lower right corner of seal #56.
Slogan Seals: there are four slogan seals in the following positions which show the double-barred cross and wording is as follows: Seal #23: "Health for All"; Seal #28: "Protect Your Home"; Seal #73: "Preventable"; Seal #78: "Curable".
1937 Christmas Seals were printed by four printers, Eureka "E" (WX88), Strobridge "S" (WX89), Edwards and Deutch "D" (WX89), and U.S. Printing "U" (WX89). A letter "E" "D" or "S" appears on seal #56, or "U" appears on seal #55.
Christmas Seals are also known as TB Charity Seals, and are usually classified as Charity Seals, or Cinderella Stamps.