Napier with box Open Link Leaf Gold Tone Necklace 18 Inch Vintage from the 1980s. This is a gold link choker necklace by Napier, open leaf 18-inch Pat. number 4774743. The Napier Hallmark is found on the clasp . This vintage Leaf link necklace is in excellent condition. Vintage from the 1980s. Materials: Aluminum. Closure: Snap lock. Art deco style. Beautiful addition to your jewelry.