PITTSBURGH (AP) - Franco Harris and former Pittsburgh Steelers teammates ignored chilly conditions Saturday during a ceremony unveiling a monument on the eve of the 40th anniversary of the Immaculate Reception.

At a tent adjacent to Heinz Field on Saturday, the monument was unveiled at the exact site of Harris' famous touchdown catch at Three Rivers Stadium on the final play of a 13-7 victory over the Oakland Raiders in an AFC playoff game on Dec. 23, 1972.

``Isn't this beautiful, guys?'' Harris said to the festive crowd. ``That play really represents our teams of the `70s.''

It was a defining moment in the NFL and sparked the Steelers to a run of four Super Bowl titles from 1972-79. They went on to win two more in 2006 and `09.

It is the third monument commissioned by the Heinz History Center acknowledging the Immaculate Reception. The others include life-size statues of Harris making his catch at Pittsburgh International Airport and at the Western Pennsylvania Sports Museum.