High number cello alert! This PSA 9 Mint 1968 Topps 7th series cello is from the very last series of the issue. High series cards were tough to find, as they were often released late in the fall, after football had started and the attention of America's youth had turned to gridiron pasteboards. Only three 1968 Topps 7th series cellos have earned the lofty grade of 9 from PSA (including this one), with none grading higher.