90-ST3x, 1990 ALA Test Design U.S. Spring Charity Seals Sheet, full gum, VF, MNH. Shipped flat.
Issued 1990 by the American Lung Association (ALA). Images of landscapes, daffodils, bald eagle, dusk, and Olympic Mountains. Each in 2 sizes (45x28mm and 88x56mm), perf. 121/2. Sheet is required to get all varieties.
Image of Cross of Lorraine with text "American Lung Association" at bottom margin of each seal. The Cross of Lorraine is the international symbol of the crusade against TB.
Sheet of 20 seals, SE3S, large margin at top with "All Living Things Depend on Clean Air", no printer's mark, Scranton 7 union label.
The American Lung Association (ALA) issues TB Charity Seals twice a year. U.S. Christmas Seals before or at Christmas, and U.S. Spring Seals before or at Easter.
Spring Charity Seals are also known as TB Charity Seals, and are usually classified as Charity Seals, or Cinderella Stamps.