Semipostal stamps are sold at a premium over face value, with the excess amount over face going to a designated charity. Although in use in other nations for over 100 years, the U.S. did not issue a semipostal stamp until 1998.  Sales of the breast cancer stamp alone has raised nearly $100 million for medical research!

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  1. #B1 - (40¢) Breast Cancer Research
  2. #B5 - (60¢) Breast Cancer Research - 2014 date
  3. #B6 - (60¢) Alzheimer's