The U.S. Mint 1979 Uncirculated Coin Set is a collection of coins made of copper, with a denomination of $1. These coins were minted in Philadelphia and are of business strike type. They are part of the U.S. Mint certification and are considered uncirculated, meaning they are in pristine condition and have not been used. The set includes coins from the United States, specifically from the year 1979. These coins are ideal for collectors looking for a complete set of uncirculated coins from that specific year.