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Cubi XII is an abstract sculpture by David Smith.
|Dimensions||278.1 cm × 120 cm × 66 cm (109+1⁄2 in × 49 in × 26 in)|
|Location||Hirshhorn Museum and Sculpture Garden, Washington, D.C.|
|Coordinates||38.888333°N 77.023056°W / 38.888333; -77.023056|
Constructed of stainless steel, completed on April 7 1963, it was purchased from his estate by the Hirshhorn Museum and Sculpture Garden in 1968. 
It is a part of the Cubi series. He used the shiny finish to contrast with the landscape. The circular grind marks change in varying lighting conditions.