6 1/2 x 3 3/4 in (16.6 x 9.4 cm)

A First Day Cover commemorating Apollo 13, fully signed by James A. Lovell Jr., John L. Swigert Jr., Fred W. Haise Jr., and Ken Mattingly. The cover features Apollo 13 mission artwork together with the official Kennedy Space Center cancellation, celebrating one of the most remarkable missions in the history of human spaceflight.

The front bears the signatures of the complete Apollo 13 mission team, including Ken Mattingly, the original Command Module Pilot who was replaced shortly before launch but remained closely involved in the mission's successful recovery from the ground. Each autograph displays the distinctive handwriting characteristics associated with its respective astronaut, including fluid pen movement, naturally connected letterforms, balanced pressure variation, and confident execution consistent with documented authentic examples.

Although Apollo 13 never landed on the Moon, the mission became an enduring symbol of courage, ingenuity, and teamwork after safely returning its crew following the in-flight oxygen tank explosion. Collectors regard fully signed Apollo 13 material as especially desirable, particularly examples representing all four astronauts associated with the mission.