Mechanical sterling silver butterfly brooch

Before the mid-20th century, this kind of design, which deliberately added simple mechanical structures such as springs and rotating shafts to jewelry to deepen the agility of the piece itself, was very popular and was usually found in earrings or brooches. This butterfly brooch also takes great pains to use the wings as four movable parts, so the wearer can adjust the amplitude of the four wings, which is especially vivid when pinned to the body. Such labor-intensive methods are basically hard to see in modern light jewelry. . . . Size:4*5.5cm Brand logo: Y Material Marking: Y / Sterling Silver Collection number S/N: #874