Mother of All Pans VS Sunday Supper Pan

My mom wants the "mother of all pans" from All-Clad, but I cannot find it on their website. All I am able to find is the Sunday Supper 7qt pan. Correct me if I am wrong, but isn't the mother of all pans 6qts? Other than that is there a difference? Lastly, why isn't the mother of all pans on their website anymore?