Palau – World of Wonders – Schonbrunn Palace – $5 – 2011 – Proof Colored Silver Crown – COA – Schonbrunn Palace is a former imperial 1,441-room Rococo summer residence in Vienna, Austria. One of the most important cultural monuments in the country, since the 1960s it has been one of the major tourist attractions in Vienna. The palace and gardens illustrate the tastes, interests, and aspirations of successive Habsburg monarchs. This beautiful legal-tender proof silver crown is part of the Wonders of the World series issued by authority of the Government of the Republic of Palau. It was minted from 25 grams of .925 fine silver and comes with a Certificate of Authenticity. Total mintage worldwide was limited to 2,500 coins.