88-S1x1, 1988 ALA Test Design U.S. Spring Charity Seals Sheet, 88-17-T2-4, full gum, VF, MNH. Shipped flat.
Issued 1988 by the American Lung Association (ALA). Designed by Remo Bramanti. Images of Tulip and poppy as 88-S1x, but no gift tags or personal messages.
Image of Cross of Lorraine with text "American Lung Association" at top margin of each seal. The Cross of Lorraine is the international symbol of the crusade against TB.
Sheet of 45 (9x5) seals, perf 121/2, SE3S, PM@R, no printer's mark, "Scranton 7" union label, "88-17-T2-4" on margin.
The American Lung Association (ALA) issues Charity Seals twice a year. U.S. National 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.