Ah, $64,000 Question, a classic example of an American format mauled by the prize cap rules because of the American quiz show scandal, of which the original $64k Question show was caught up in, by (it is claimed) producers manipulating the questions to influence the outcome. Its better name is the Twenty One scandal.
Anyway technically first time round in the 1950s over here the show gave away 64,000 shillings, equivalent to about £3k today, before the prize cap as a result of the above scandal, and the Monkhouse era couldn't give away 64k of anything, though ironically if it had lasted another year or two it probably could have done. American shows were giving away five and later six figure sums of prizes as early as probably the late 1960s.
Amazing what half a century does to attitudes. And Bob Monkhouse was one of the greatest TV talents. To think it'll be 14 years this December since he died, and all the TV quiz formats since that he would have been perfect for...
Didn't it turn out the first UK version of Twenty-One was possibly as crooked as the American?