Minted in 1-oz., 1/2-oz., 1/4-oz., and 1/10-oz. sizes, all Vienna Philharmonics are made from .9999 pure gold. No alloyed metals are added.The Vienna Philharmonic is pure gold, with a fineness of .9999 or 24 karats, and is the largest diameter one-ounce pure gold coin in the world.
The country of issue, the gold weight in ounces, legal tender value in euros, and the coin’s purity are also stamped on the reverse side of the coin.
Vienna Philharmonic coins are minted at the Austrian Mint AG, now a subsidiary of the Austrian National Bank.
The Mint was established in 1194 and has remained in its current building since 1837.