NINE UNITED STATES MODERN COMMEMORATIVE COIN SETS. Including: 1987 Constitution Bicentennial two-coin (gold and silver) proof set. 1988 Seoul Olympiad two-coin (gold and silver) proof set. 1989 Congress Bicentennial three-coin (gold, silver, copper-nickel) proof set. 1990 Eisenhower Centennial proof Silver Dollar. 1991 Mount Rushmore three-coin (gold, silver, copper-nickel) proof set. 1992 XXV Olympic Games three-coin (gold, silver, copper-nickel) proof set. 1992 Columbus Quincentenary three-coin (gold, silver, copper-nickel) proof set. (two sets) 1992 White House 200th Anniversary proof Silver Dollar. Ungraded. For further information on this lot please visit Bonhams.com For further information about this lot please visit the lot listing