The collection is the official issue of the "International Aerospace hall of Fame", this is their Cloisonne Medallion Collection. The obverse of each medallion features the mission logos of all the manned missions of the Mercury, Gemini and Apollo space programs, while the reverse side features flight statistics for the featured missions. This complete collection consists of all 28 medallions, each approximately 1.5" across, layered in 24K gold. They feature vivid colors and depict each mission patch. A metal (brass?) display case with a hinged glass cover measuring 17" X 10" X 1.5". and comes in a nice presentation box. The full color booklet included is 8 1/2" X 11" and is a tri-fold with narrative on each spacecraft and mission patch. Much of the information contained in the booklet was provided courtesy of Dick Lattimer, who's book, "All We Did Was Fly To The Moon", is a good source for further reading on the early NASA missions.