I just happened to visit the USPS website today. The photo I posted is of a stamp the website was advertising for the eclipse. Look closely at the stamps. The second stamp in on the bottom left shows a full moon. The others are a black, eclipsed moon. Here’s the catch, I rested my thumb on the one of the full moon. Before that, it looked like all the others. These are heat sensitive stamps, and the picture changes as room temperature changes. These are the coolest stamps the Post Office has ever issued. They are the newest Forever stamps. Better get some while you can...