Carse Antiques has dated this piece to the Before 1700 period.

SIZE; 20.5cm diameter, 6.5cm high.
Situated on the great plateau of central Iran, Nishapur was for centuries an important political and cultural centre: a seat of governmental power in eastern Islam, a dwelling place for diverse ethnic and religious groups, a trading stop on commercial routes from Transoxiana and China, Iraq and Egypt. Nishapur's most significant period when the buffware was produced extended from the ninth century to 1221, when, after repeated earthquake disasters and military occupations, the city was devastated by the Mongols
Carse Antiques has dated this piece to the Before 1700 period.
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