Véronique Bamps, an antique-jewelry expert with a firm in Monaco, will be showing a delicate design once owned by Princess Irene of Greece. This detailed 16-inch-long gold-chain choker necklace is hung with 24 delicate diamond clusters fashioned in the garland style (popular in early 1900s). Judging by its dated signature, the necklace was likely crafted in Paris by either René Boivin, an accomplished goldsmith, or Madame René Boivin (Jeanne Boivin), his wife.