Сейчас читаю Шерлока Холмса на англ., и случайно открыла для себя кое-что интересное.

Ну теперь-то всё понятно, спасибо сэру Арутру Конан Дойлю  =)))))

I entered my consulting-room and found a gentleman seated by the table [...] He was young, not more than five-and-twenty, [...].
Adventure 9: “The Adventure of the Engineer's Thumb”


“That is unusual in a young girl.”
“She is of a quiet nature. Besides, she is NOT so very young. She is four-and-twenty .”
Adventure 11: “The Adventure of the Beryl Coronet ”