STS-51 Launch Cover

 Limited-Edition Cover Honors Space Shuttle Discovery (STS-51) Mission

This special cover features a stamp from the 1992 Space Accomplishments set with a cancellation date on the day of the Space Shuttle Discovery's launch (September 12, 1993).  The cover also includes the official NASA mission patch design as the cachet.  A neat piece of space exploration history.  Get yours today.