A Brooch - "Bow" Art Deco 800/1000 gold and 500/1000 platinum set with 175 8/8 and brilliant cut diamonds with an approximate total weight of 16.50 ct. Portuguese signs of use Lisbon mark (1938-1984), Nuno Pinheiro maker's mark (1920-1952) Dimensões (altura x comprimento x largura) - 6,6 x 4,9 cm; Peso - 61,6 g. Notes: Provenance: Jewelry collection of a soprano opera singer of the São Carlos National Opera House, Lisbon.