A very fine Worcester porcelain mask jug, painted with landscape panels, butterflies, insects and flowers (Earl Dalhousie pattern type). English circa 1780, underglaze blue open crescent mark. Provenance: Robert Burke collection no 98. Reference: Franklin A. Barrett: op.cit. Plate 55, Worcester Porcelain The Kelpser Collection Simon Spero for a cider jug of the same form, 19 cm high, 15.6 cm wide over the handle