From the Museo del Traje Web site located via pinterest.com/pocketmuseum/17th-century-fashion.
The caption for this is approximately, "Vest, or adjustable bodice in ivory silk gros de Naples. Wide neckline and sleeveless, tight-waisted terminating in a point in front. Elaborately decorated embroidery enhances gilded metallic thread of twisted gold thread on silk center that uses floral motifs and a symmetrical arrangement from the center. Its interior is heavily reinforced with fourteen pairs of bones that extend downward going outward. It is structurally consistent with mid-seventeenth century European bodices." The armscyes are set well back, influencing the wearer's posture. While this bodice lacks a stomacher, it has a stomacher like central panel. It opens from the back.
Keywords: 1660s, Spanish, deep vee waistline