A Sugar Bowl D. Maria I, Queen of Portugal (1777-1816) 833/1000 silver ribbed and engraved decoration "Garlandsof flowers" Portuguese Oporto Assay mark (1792-1803), maker's mark credited to João Rodrigues da Costa Negreiros (1756-1811) Dimensões (altura x comprimento x largura) - 21 cm; Peso - 480 g.