A History of the World - Object : Seal used for making impressions that led to the discovery of the Indus civilisation in Pakistan and India
The seal is from an advanced ancient civilization (2500-2000 BC) that was only recently rediscovered in 1924. The language has not yet been translated.
http://www.bbc.co.uk/ahistoryoftheworld/objects/RRbS0YxzQQa88y_xkV1ADg
