Overdue book returned to library 150 years late: How much is the fine?

A library has received the return of a book that was overdue for 150 years. The item was discovered bricked into a fireplace, leading to its eventual recovery and return to the institution. The situation has raised questions regarding the specific amount of the fine associated with such an extreme delay in returning the borrowed material. The discovery highlights a century and a half of the book remaining hidden within a structure.