All these pieces are Seljuk from the 12-13th century.

Produced with the so-called ‘Minai technique’, involving the use of colors that have to be fired at different temperatures. First blue, green and turquoise were applied on an underglaze and fired. Other colors such as yellow, red, white, black and sometimes gilt were then applied on top of this, and re-fired at a lower temperature.

Correspondent: J.M.Criel, Antwerpen.
Source: Wikipedia.