1987, 1989 & 1991 Prestige Proof Set Trio. When the U.S. Mint introduced special commemorative coins in the early 1980s, they were sold individually and as part of Prestige Proof Sets. Most collectors bought their commemorative proofs individually, and most proof set buyers continued to acquire regular sets each year. The result is that Prestige Proof Sets have become BY FAR the scarcest form of these coins.
1987 Prestige Proof Set. The year 1987 marked the 200th anniversary of the U.S. Constitution. This 6-coin 1987 prestige proof set includes the specially issued Constitution silver dollar in exquisite proof form. Also included in the set are the regular cent through half dollar proofs. The 435,495 mintage of this prestige proof set was vastly lower than the regular 1987 proof set production.
1989 Prestige Proof Set. The 211,807 mintage for the 1989 Prestige Proof set was about 7% of the regular proof set's that year. The 1989 Prestige Proof set contains the five regular annual issues as well as the commemorative Congress Bicentennial half dollar and silver dollar in finest-quality proof form.
1991 Prestige Proof Set. The 256,954 mintage for the 1991 Prestige proof set was less than 10% of the year's regular proof set. That year's Prestige proof set contains the five regular annual issues as well as the commemorative Mount Rushmore silver dollar and half dollar in finest-quality proof form.