Bidspirit auction | US 1987-1990 Uncirculated Mint Sets,

US 1987-1990 Uncirculated Mint Sets, Base Metal, Uncirculated - A lot of United States Mint Uncirculated Coin Sets including annual issues from 1987, 1988, 1989, and 1990. Each set contains uncirculated examples from both the Philadelphia and Denver mints for the following denominations: Lincoln cent, Jefferson nickel, Roosevelt dime, Washington quarter, and Kennedy half dollar. The coins are housed in their original Treasury Department clear plastic sleeves and are accompanied by the official outer envelopes and printed specification cards. Each annual set includes two plastic sleeves, one for the Philadelphia (P) mint coins and one for the Denver (D) mint coins, each containing five coins and a plastic mint token. The specification cards detail the obverse and reverse designers, composition, weight, and diameter for each denomination. Composition (Cent): Copper Plated Zinc (2.5% Cu, Balance Zn) Composition (Nickel): Cupro-Nickel (25% Ni, 75% Cu) Composition (Dime, Quarter, Half Dollar): Cupro-Nickel Clad (8.33% Ni, Balance Cu) Standard Weight (Cent): 2.500 g Standard Weight (Nickel): 5.000 g Standard Weight (Dime): 2.268 g Standard Weight (Quarter): 5.670 g Standard Weight (Half Dollar): 11.340 g Standard Diameter (Cent): 19.05 mm Standard Diameter (Nickel): 21.21 mm Standard Diameter (Dime): 17.91 mm Standard Diameter (Quarter): 24.26 mm Standard Diameter (Half Dollar): 30.61 mm.