It's being billed as a first-of-its-kind stamp meant to celebrate the total eclipse of the sun -- and it may have you doing a double-take.
That's because this Forever stamp from the U.S. Postal Service changes dramatically with just a touch of your finger. It works using thermochromic ink, according to the Postal Service.
With a couple of quick rubs, a photo of the total solar eclipse from 2006 reveals an image of a full moon. Once it cools, it reportedly reverts back to the image of the eclipse.
Now there's a reason for the release. The USPS says August 21 will mark the first time since 1979 that people may be able to get a glimpse of a total solar eclipse from the U.S. mainland.
The stamp is expected to be issued in June.
The Postal Service points out on its website that the stamps can be sensitive to direct sunlight, so if you want to preserve the effect, keep that in mind.
