Space Shuttle Challenger Astronaut Ellison Onizuka Autograph PSA Authenticated!

For sale is a signed envelope from astronaut Ellison Onizuka. Onizuka was one of the seven astronauts killed on the space shuttle Challenger in 1986. The envelope is in excellent condition and gives information about Onizuka, there is a cancelled stamp on it dated July 10, 1978. The envelope measures 6 1/2 by 3 1/2 inches. This has been authenticated by PSA, one of the most trusted authenticators in the world, feel free to go to their site and verify AK91857, the sticker is on the back of the envelope to not take away from the signature. This is a great chance to get a hard to find signature of an American hero and add it to any history or space collection!