Description:November 20, 1977 Pittsburgh Steelers vs. Dallas Cowboys game ball. Wilson Pete Rozelle Official NFL football has "11-20-77 Pgh - 28 Dallas - 13" game date and score written on in vintage black ink. Panel below bears a very faint inscribed marker signature which can not be deciphered. Light evident usage wear throughout. Includes letter of provenance from the Cuponm Family: EX