The heat of your finger will react with the stamp’s thermochromic ink to reveal an image of the full moon over a solar corona. It will revert back to a totally-eclipsed sun when it cools.
The “Total Solar Eclipse Forever” stamp will be made available on June 20, 2017 after its First-Day-of-Issue ceremony at the University of Wyoming in Laramie. (Am I the only Oregonian disappointed that it’s not taking place in Madras?) Apparently there’s some kind of druid sculpture there that manifests its magical properties on that day, the summer solstice.
Learn more (and watch for preorder information) at the USPS website.
(Fellow philatelic umbraphiles, spread the word! Uncle Sam says use hashtag #EclipseStamps.)