Everything about the 1971 Topps baseball card issue sets it apart. Consider the black borders, which make it probably the most condition-sensitive trading card issue ever produced, the scarcity relative to other cards produced in '71, and, of course, the unparalleled lineup of superstars contained within the giant 752-card set, issued across six series throughout the spring, summer, and fall. This bright blue 10-cent pack is from the 5th series, of which only 11 have ever been graded and authenticated by PSA. It also happens to be the series in which cards of Willie Mays, Ernie Banks, Roberto Clemente, Jim Palmer, and numerous other baseball legends are possible. The high-grade examples that could be in this wax time capsule may tempt the new owner to open it up and discover the contents!