If authenticated, the discovery will rewrite the printing history of Korea and the world. The oldest evidence so far of human metal type printing technology is "Jikji," a Buddhist scripture published in a Korean provincial temple in 1377, some 70 years ahead of German goldsmith Johannes Gutenberg's production of his typeset Bibles. The Jikji is currently kept in the National Library of France. (Yonhap Feature) Is it world's oldest movable metal type?