AN INDIAN COLONIAL SILVER MUG, maker's mark of William John Twentyman, Calcutta, circa 1824 - 1829, born in India, gilt lined, cylindrical, on molded rim base, the front with vacant shield form cartouche flanked by large flower, on stippled ground, with partly reeded multi-scroll handle and everted gadrooned rim--5in. (12.5cm.) high, 14oz.