71-1x3, WX245, 1971 U.S. Christmas Seals Sheet, no pm, full gum, F, MNH. Fresh, full gum, never folded, shipped flat. Scan is of front of sheet.
Issued 1971 by the National Tuberculosis and Respiratory Disease Association (NTRDA). Designed by James Clarke. Images of candles, men, Christmas trees, angel, etc. - 100 different designs. Sheet of 100 (10x10) seals, SE3S, PM@T, perforated margin at top, multicolored. Seal size: 17x22mm, perf 121/2. No Printer's Mark on seal #56 indicates Eureka Speciality Printing Co. Vertical perfs stop at margin.
This is mint, never hinged, full gum dealer stock.
Christmas Seals are also known as TB Charity Seals, and are usually classified as Charity Seals, or Cinderella Stamps.