USPS Forever Stamp: Total Eclipse of the Sun (1 Sheet)
- Placing your finger over the black disc on the stamp causes the ink to change from black to clear to reveal an underlying image of the moon.
- The first U.S. stamp to use thermochromic ink, which reacts to the heat of your touch.
- The Total Eclipse of the Sun stamp is being issued as a ForeverÂ® stamp. This ForeverÂ® stamp will always be equal in value to the current First-Class MailÂ® one-ounce price.