Bidspirit auction | A necklace

A necklace - 800/1000 gold and 500/1000 platinum blue enamels application, set with citrines, pearls probably natural (not tested), rose-cut diamonds and 52 8/8 cut with an approximate weight of 0.75 ct Portuguese missing one pearl, original case Lisbon mark (1938-1984), LEITÃO & IRMÃO maker's mark Dimensões (altura x comprimento x largura) - 41 cm; Peso - 136 g. Notes: vd. VIDAL, Manuel Gonçalves; ALMEIDA, Fernando Moitinho de - ”Marcas de Contrastes e Ourives Portugueses (1887 a 1993)”, vol. II. Lisbon: IN-CM, nº 100 and 63