46 1/8 by 23 by 17 1/2 in. 117 by 58.5 by 44.8 cm.
Executed in 2008, this work is unique and is accompanied by a certificate of authenticity signed by the artist.
Phillip's de Pury & Co., London, Ai Weiwei - Four Movements: Selling Exhibition, March 2009
Acquired from the above by the present owner
Phillip's de Pury & Co., London, Ai Weiwei - Four Movements, March 2009