PHILADELPHIA (CBS) – The Price Is Right will celebrate its anniversary exactly 40 years after the shows debut on September 4, 1972.

PHOTOS: Longest-Running Game Show In TV History: The Price Is Right

On Tuesday, September 4, 2012 at 11 a.m. ET the show will air a special episode, welcoming back contestants from the last 40 years and showing some classic clips.

See a clip promoting the show here.

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