The jug, most probably for milk, has a capacity of just over 1 pint and stands 4 1/4 inches high and has a very unusual printed mark "Porcelain" on the base, within an elaborate scrolled cartouche. The Jug was made by Rathbone of Tunstall Staffordshire England. They operated from 1808 until 1843. See "Rathbone China and Earthenware manufacturers" by Ian Harvey.
The jug is in good antique condition with a star crack to the base - see images - and weighs 312g. A very nice example of George IV or William IV period porcelain.
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