That is very common in older European books. A bit outdated in the late 19th century, but very common in the 18th century. This is a Tauchnitz edition, which was basically the Penguin paperbacks of its day (which of course is also why it is not worth much nowadays). Most Tauchnitz editions I have come across has this separate Tauchnitz edition title page which shows the number that particular title has in the series. I guess to show off the very spectacular list of English language titles they had in their stock.
The Chinese bookseller stamp and the owners signature from a Chinese location is kinda cool. It provides the volume with a bit of background of the more unusual kind. Probably not enough to effect the price though.