It is the fragmentary figure from the jamb at the Audience Hall (also known as 'Palace with the Column' or 'Palace S') in Pasargadae, the extinct city, that was first capital of the Perian Achaemenian dynasty in the 6th century BC.
Source of Descriptive Information
Stroncach, D. (1978). Pasargadae: A report on the excavations conducted by the British Institute of Persian Studies from 1961 to 1963. Oxford, UK: Oxford at the Clarendon Press.