It is awarded by UNESCO to recognise those who have made outstanding contributions to physics through research that has or could have a significant influence on the world.
In 1985, the 100th anniversary of the birth of Niels Bohr, UNESCO minted a gold medal to commemorate the father of quantum physics and one of the most eminent scientists of the 20th century.
It also bears the inscription: Contraria sunt complementa (Opposites are complementary), Bohr's principle of complementarity.
[1] Jimmy Wales of Wikipedia was one of the three celebrities who were presented with the medal for 2013 at an event in honour of the 100th anniversary of Bohr's atomic model.
The medals were presented at the University of Copenhagen conference on "An Open World" on 5 December 2013 by Princess Marie of Denmark.