First released in 1983 and continued through 1997 missing only one year(1985), Prestige Sets contain proof strikings of the regular issue coinage in addition to the commemorative dollar and half dollar from the year of release. The coins are presented in a book-like case with a special laminated enclosure of a different design than the standard proof set sleeves. (Source: Wikipedia contributors, "United States Mint coin sets," Wikipedia, The Free Encyclopedia, accessed December 16, 216.)