This is a Nina Ricci "NR" letter brooch. "NR" is the initials of Nina Ricci, and this brooch is a signature accessory of the brand, commonly found in its vintage jewelry line. Design: Featuring a three-dimensional metal "NR" design with an elegant, vintage font, consistent with Nina Ricci's consistently feminine and sophisticated brand image; it belongs to the brand's fashion jewelry category. Structure: A classic brooch style (with a clasp), suitable for decorating clothing, bags, etc. It belongs to Nina Ricci's vintage accessories, with a style leaning towards elegance and simplicity. It not only reflects the brand's identity but also serves as a sophisticated accent to everyday wear, making it a common item for brand fans and vintage jewelry collectors.