Longines Symphonette – America Wildlife – Woodpecker – Sterling Silver w/ 24k Gold – Art Round – Approximately 1.2 Ounces of Sterling Silver with 24k Gold electroplating – This neat high-relief round is part of a beautiful set of medals depicting 36 different forms of American wildlife considered to be endangered in the wild. The medals were minted by The Wittnauer Mint and marketed by the Longines Symphonette in the 1970’s. This medallion is Sterling .925 (92.5%) pure silver, contains more than one ounce of .999 fine silver and has a layer of electroplate in 24kt. gold. The diameter is 40 millimeters.