Book with secret cache and music box, titled "Treaty of devolution, dévolut and vacation of right" by Mr. pial, Volume I, Paris, year 1757, leather cover decorated with a crowned shield and the motto "Honi soit qui mal y think" antique eighteenth century.
This book is in good condition. The book dates from the eighteenth, the hideout and the music box should they date from the nineteenth century.
A report: the malfunctioning system to music (it is certainly blocked), the paper is yellowed and dive in places, wear leather, see photos.