763 - A pearl and citrine gold and silver brooch

A pearl and citrine gold and silver brooch Gold, fineness .800, and silver, fineness .833 Set with 2 grey baroque cultured pearls, oval-cut citrines and rose-cut diamonds Porto hallmark (1938-1984), goldsmith's mark of Ferreira Marques & Irmão (reg. 1934) H.: 6 cm 22.1 g VIDAL, Manuel Gonçalves; ALMEIDA, Fernando Moitinho de - "Marcas de Contrastes e Ourives Portugueses (1887 a 1993)", vol. II. Lisbon: IN-CM, nos. 98 and 1835