Lot Essay
As D. Howard notes in The Choice of the Private Trader, the current form is the forerunner of Japanese square flasks which came into fashion in the 1660s. See Ayers, Impey and Mallet, Porcelain for Palaces: The Fashion for Japan in Europe, 1650-1750, Oriental Ceramic Society, London, 1990, p. 108, pl. 56 for an example.