SCIENCE said:

Despite some damage, the book is still in good condition. As well as the ownership stamp inside the front cover, it also states the library’s opening hours, borrowing restrictions and, crucially, fines. At a rate of three pence per week for every week the book is overdue, library staff estimate the book has racked up an overdue bill of $28,000, accounting for inflation.

Luckily there was no actual fine to pay.