An Oak Tree
1973 conceptual work of art by Michael Craig-Martin consisting of a glass of water on a glass shelf on metal brackets 253 cm above the ground and a text mounted on the wall asserting that it is an oak tree
1973 conceptual work of art by Michael Craig-Martin consisting of a glass of water on a glass shelf on metal brackets 253 cm above the ground and a text mounted on the wall asserting that it is an oak tree