The front cover of a valuable book is often richly decorated -especially copies of the Gospels. Early books were often heavily jewelled, but blind tooled and carved leather decorations were also used.
Many early books were also studded. This may also have had a practical value in holding the leather in place
Detail: 10th century mosaic, Haigia Sophia
Istanbul
The Strahov Gospel, (Prague) circa 870 AD
Carved leather binding
circa 1400
Germanisches Nationalmuseum, Nuremberg
Old book with leather ties.
Detail:St Jerome, Durer 1521