Hi Wayward... you got there first.
Hi edb_app
The book mentioned is 'A Kent Squire', and it would seem that it was being newly released at the time your edition was published, hence my guessing it dates from c 1900 ... I can't quite make out what is being said in the advert, but you could check to see what is being said about that particular book, which should help you date it.
Good luck