Conical bowl with floral stems

Conical bowl on short foot, decorated in black and cobalt blue under a transparent turquoise glaze with four radiating panels enclosing large flower stems divided by blue double bands.
The reverse with four waterweed motifs.

Kashan, late 12th- early 13th century AD

Literature:
Pal, Pratapaditya (ed.): Islamic Art, the Nasli M. Heeramaneck Collection, Los Angeles, 1973, no.59, pp.42-3