Lynn Swann's number has not been retired by the Pittsburgh Steelers. There has only been one number officially retired by the Steelers and that was #70 Ernie Stautner. There are some numbers that are unofficially retired by the Steelers and Lynn Swann's number is not one of those either.
Ernie Stautner's #70.
Defensive tackle Ernie Stautner had his #70retired by the Steelers. That has been the only number they have retired.
The first (and last) jersey number to be retired by the Steelers is #70 for Ernie Stautner. While his is the only one officially retired, many are "unofficially" retired.
It is in honor of defensive tackle Ernie Stautner, who played for the Steelers from 1950-1963. It is the only number officially retired by the Steelers.
The only Penguin to have their Jersey retired is Mario Lemieux.
The Steeler logo is only featured on one side of the helmet.
70-Ernie Stautner is the only official # retired by the Steelers. There are other unofficial #'s that will probably not be in use anymore by the team.
On October 25, 1964, they retired jersey No. 70 in honor of former defensive tackle Ernie Stautner
Through the 2010 season, that was Terry Bradshaw in 1978.