The product is a 1978 United States Proof Set minted at the San Francisco Mint. This set includes uncirculated coins struck in proof condition, accompanied by a certificate from the U.S. Mint. The set showcases coins from the United States with a focus on the year 1978, making it a desirable collector's item for those interested in American coins. The coins are meticulously crafted and preserved, adding value to any numismatic collection.