An Oval Milk Jug with Lid D. Maria I, Queen of Portugal (1777-1816) 833/1000 silver engraved and striated bands Portuguese signs of use Oporto assay mark (1792-1803), maker's mark credited to José Ferreira Guimarães (1799-1842) Dimensões (altura x comprimento x largura) - 21 cm; Peso - 369 g.