A DERBY ORNOTHOLOGICAL CYLINDRICAL MUG painted in the manner of Richard Dodson with a jay and two gold-finches perched on a tree-stump, a river landscape in the distance, within a rectangular gilt line cartouche flanked by gilt anthemion and foliage scrolls and beneath a border of gilt stylised foliage scrolls, with gilt rim and footrim, Crown, crossed batons, D and 7 marks in iron-red, Duesbury & Kean, circa 1810