In June 1972 I saw the Stones on both their early and late shows June 4th, Jethro Tull June 11th and Zeppelin on June 19th - all in the Seattle Center Coliseum, and all sold out Those were the days (tickets were about $5.00 for each show)!
To be honest, Tull's performance was so amazing for me personally that Led Zeppelin was a bit of a letdown. Believe it or not a lot of folks left during the encore. I still thought they were great but the bar had been set very high by the concerts the weeks before.