What To Do With Unused Stamps - USPS
about.usps.com › news › state-releasesMay 27, 2009 · The answer is simple—use them! The value of the stamp will always be the value indicated on the stamp. All you need to do is purchase additional value stamps (likely 2-cent stamps) and use both on your envelope. Mr. Zip’s Tip: The U.S. Postal Service has earned eight consecutive EPA Waste Wise Program Partner of the Year awards.