The documents were sent by the German embassy in Tokyo and arrived in Argentina on 20 June 1941 inside 83 diplomatic pouches aboard a Japanese steamship, according to information gathered by court officials.

They ended up in the Supreme Court that same year after they were confiscated by Argentine customs officials who had opened five pouches at random and found Nazi propaganda material inside.

They were rediscovered last week by workers who were intrigued by a number of wooden champagne crates they stumbled upon while moving archival material from the Supreme Court's basement.

The crates were quickly moved to a secure office in the building and court officials alerted the Buenos Aires Holocaust Museum to their existence and asked for its help in creating an inventory of all their contents.