2009 20 oz Gold Austrian Philharmonics To celebrate the 20th anniversary of the Gold Austrian Philharmonics, the Austrian Mint decided to create these beautiful 20 oz Gold coins. Each one features the same design as the beloved Gold Philharmonics in a larger, more detailed size. The Gold Philharmonic was created as a Gold tribute to the renowned Vienna Philharmonic Orchestra, one of the world's most well-known orchestras. The obverse of the Gold Philharmonic coin depicts the Great Organ of the Golden Hall in Vienna's concert hall, the Musikverein. The reverse shows an array of instruments including bass, cellos, a harp and a Vienna horn. These instruments represent the rich musical history of Austria.