The product is a lot of two United States Mint sets from 1966 to 1978, all in proof condition and housed in boxes. The sets are all uncirculated and were struck with a proof finish at the San Francisco Mint. Each set includes coins certified by the U.S. Mint, showcasing the craftsmanship and quality of American coinage during this period. Perfect for collectors or those interested in adding to their collection of US coins, these sets offer a glimpse into the history and artistry of the minting process.