Another cartoon featuring Oswald the Lucky Rabbit - 'Empty Socks' (pictured) - was discovered in 2014 by Norway's National Library. (PHOTO BY Nasjonalbiblioteket/AFP/File / MARTIN WEISS)
TOKYO: When Yasushi Watanabe bought a cartoon film decades ago as a high school student in the Japanese city of Osaka, he had no idea he was purchasing animation history.