[PORTUGUESE NOBILITY]. Metal necklace. Lisbon: Joachim Augusto da Costa, [ca. 1850s]. Necklace with links of alternating castle towers and ovals with floral motifs. Size: 670 mm laid-out. With the identifying link of “J. A. Da Costa Fabricante Lisboa” (some mild rubbing, tarnishing). Housed in the original red Morocco box with hinge, with the gilt-stamped markings of the Military Order of the Christ; box lined in blue satin, with Da Costa’s inkstamp on the inside of the lid (box is worn, hinge of box is somewhat loose with damage to interior and exterior).