A small jar, fired in the early Joseon dynasty. The vessel has a rounded body with a rimmed mouth, the upper section coated in a thick layer of white slip applied with sweeping brushwork, through which the motif has been incised. Feather-like lines flow freely across the surface, beneath a lustrous glaze with a distinct bluish tone covering the whole vessel. The piece is thought to have been made as an oil jar.

This style of decoration is known in Japan as hagoromo-de (“feather-robe design”), and examples painted in iron pigment are also known. What the Korean potter originally intended to depict remains uncertain; the design is generally understood as an abstraction of grasses or willow motifs. The Japanese name, however, seems to reflect a poetic projection, associating the flowing lines with the trailing robes of celestial maidens. Oil jars bearing this decoration are particularly rare, and, together with the unusually blue-tinted glaze, the piece conveys a cool, refreshing impression.

Most surviving oil jars of this type bear heavy staining from long use, yet the present example remains comparatively clean, with only a faint residual odour. Apart from kiln flaws and minor areas of glaze loss, there are no notable defects, and the condition is good. Accompanied by a fitted wooden storage box.