Cowboys vs. Redskins, only time this combo happened, 1981: Cowboys had redesigned their blue jersey, but by the middle of the season, they had added a blue separation between the silver number and white outline. Also, looking around, I found this Rams jersey I hadn't seen before: That's Deacon Jones, so this happened sometime between his rookie year in 1961 and 1966, when the Rams dropped yellow temporarily. No Packers NOB, so that may be a clue.