An authentically-signed, 8x10 color Kodak print of Buzz Aldrin on the Moon signed with a silver pen, "The Eagle has Landed, Buzz Aldrin, Apollo XI".  This is a lot of handwriting and not merely just a signature.  While supplies last, but there are only a few remaining.  (Limit 2 per customer)

Buzz Aldrin, Apollo 11 The Eagle Has Landed