PERSIAN KASHAN SAFAVID BOWLS. Age unknown. Safavid bowls, likely crafted by Kashan potters, are notable for their use of underglaze painting with deep cobalt blue ore, a technique considered a Persian invention. They often display heavy crazing to the glaze and may have minor chips, particularly on the rim, due to their age. Some examples feature hand-enameled cobalt blue underglazed scrolling floral and foliage ornaments. - 6.5 inches (diameter). Estimate $100-150