The 1977 Denver mint roll of dollar coins from the United States features pieces struck in that year at the Denver mint facility. Dollar coins from this era may exhibit various designs depending on the specific type issued, such as the Eisenhower dollar or the Susan B. Anthony dollar, depending on the series produced. Collectors often seek rolls due to their potential for uncirculated specimens, and these coins can be graded based on their condition, rarity, and demand in the market.