The U.S. Postal Service offers intrigue and excitement for customers with a stamp that needs deciphering to be fully appreciated.

The new Mystery Message Forever stamp is designed to put your sleuthing skills to the test! Featuring bright colors and interesting shapes, the stamp design is a visual riddle spelling out a difficult-to-discern message. Each colorful square contains a letter in an interesting pattern.

The seemingly random patterns were carefully placed so that when put all together, the message reads (spoiler alert): “More Than Meets the Eye!” The reverse side of the pane also provides the solution.

Art director Antonio Alcalá designed the stamp. The Mystery Message stamp is being issued as a Forever stamp. This Forever stamp will always be equal to the current First-Class Mail 1-ounce price.