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Hmm. Looking it up, it seems that this is a British/American difference.

Yes, missing the "and" after hundreds, while completely parseable by Britons, comes across as a glaring Americanism. (And I didn't realise before that it was obligatory in some contexts to omit "and" after hundreds.) Mind you, I think it's only about a hundred years ago that "and" after tens started being optional: wouldn't Dickens have had "a hundred and thirty-and-seven pounds"?

Peter