The Jikji, world's oldest machine printed book, on show in Paris

The oldest known work printed on a mechanical press - a Korean book that predates the first European example by several decades - is on show in Paris for the first time in 50 years. Photo: AFP

Jikji, acknowledged by Unesco as the world's oldest book printed in movable metal type, is being exhibited to the public for the first time in 50 years at a major show in France.

The book is on display at the National Library of France until July 16, at an exhibition that focuses on the history of printing technology.