A Plaque of the Order of Our Lady of Vila Viçosa 835/1000 silver blue and white enamelled decoration Portuguese 20th C. (1st half) bearing a plaque of manufacturer Frederico G. da Costa, Rua de São Julião nº 110 - 3 - Lisbon, later Lisbon mark (post 1985) Dimensões (altura x comprimento x largura) - 7,3 cm; Peso - 16,6 g.