No other vase of this shape appears to be recorded. The most closely related 18th century piece is another slightly smaller robin's-egg-glazed vase with a compressed body which is also moulded with seven bosses around the shoulder, sold at Sotheby's London, 13 June 1989, lot 336.

The shape of this vase is also reminiscent of the Southern Song dynasty Longquan celadon 'bamboo-neck' vase in the preceding lot, as seen in the tall neck with moulded bow-string bands and the wide dish-shaped mouth.

The unique form is complemented by the extraordinary effect of the robin's-egg glaze, which is achieved with the use of copper and arsenic as an opacifier to create an opaque stippled turquoise glaze. There are two distinctive types of robin's-egg glaze: the first stippled with turquoise and dark blue, as in the present example; and the other streaked with copper-red, as found on the peacock-feather glazed censer in lot 869.