Xav, from France, sent me the Greek coin depicted in the image, along with the Belgium "100th anniversary of International Women's Day" coin, (see next post) and also some missing currency coins, as a result of our last and only swap, happening last January.
The coin commemorates the 2.500th anniversary of the Battle of Marathon. The centre of the coin shows a synthesis of a shield and a runner/warrior representing the struggle for freedom and the noble ideals that the Battle of Marathon stands for. The bird on the shield symbolises the birth of Western civilisation in its present form.
Thanks, Xav.