A Milk Jug D. Maria I, Queen of Portugal (1777-1816) 833/1000 silver ribbed and engraved decoration "Garlands of flowers" Portuguese small bruise Oporto Assay mark (1792-1803), maker's mark credited to João Rodrigues da Costa Negreiros (1756-1811) Dimensões (altura x comprimento x largura) - 20,5 cm; Peso - 275 g.