121-S4, 2021 ALA Test Design U.S. Spring Charity Seals, As Required Strip of six (6) designs, VF, MNH. Issued 2018 by the American Lung Association (ALA). Designed by Keith Stapleton/Advocate Art. Images of puppy with bunny, gazebo, bunny with chicks, dog, cat, lamb with chick. American Lung Association at bottom of each seal. Violet border, with images framed in light violet. Self adhesive, die cut, six (6) designs.
The American Lung Association (ALA) issues 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 Seals, and are usually classified as Charity Seals, or Cinderella Stamps.