This unusual Swatow ware bowl, also known as Zhangzhou ware, is from the late Ming dynasty (16th-17th century). The term "Swatow" refers to a type of Chinese export porcelain produced in the kilns of Zhangzhou in southern Fujian province for a Southeast Asian market. These ceramics are known for their bold, spontaneous brushwork and somewhat coarser quality compared to the imperial porcelain from Jingdezhen. 

Key characteristics of this type of ware, as visible in the image, include:

·        Blue and White Decoration, the presence of a crackled glaze, and  "Swirl" or "Swallow" Motifs. 

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