"Sale of the Century" was a UK game show based on a US game show of the same name. It was first shown on ITV from 9 October 1971 to 6 November 1983, hosted by Nicholas Parsons.
It was one of the most popular shows on the network - spawning the often-mocked catchphrase "and now, from Norwich, it's the quiz of the week."
It has been revived twice: first on Sky Channel from 1989 to 1992 hosted by Peter Marshall and then on Challenge TV from 1997 to 1998 hosted by Keith Chegwin.
The ITV version followed the rules of the original American version. Three contestants start off with £15. Questions are worth different values starting with £1, later increasing to £3, and finally £5; by the final season, the £1 questions were eliminated. The question is asked and players can buzz in at any time. Correct answers add the money to their score and incorrect answers subtract the money from their score with only one player allowed to buzz in on each question.