From the CoinWeek IQ Encyclopedia:
10 Euro Silver Coin – Ambras Castle | Schloß Ambras (2002)
Castles of Austria Series (2002-2004)
The Castles of Austria Series ran from 2002 to 2004 and featured a total of six coins. Each coin in the series, released two a year, depicts a famous Austrian castle and is struck in 0.925 fine silver. The coins are legal tender in Austria at a face value of 10 euros and come in three finishes: Uncirculated, Special Uncirculated, and Proof. The Special Uncirculated version was issued in a limited edition bi-fold card, which houses the coin in a blister pack. Proofs were issued in numbered editions, contained in a plastic capsule and housed in a burgundy box. The Ambras Castle (2002) 10 euro silver coin was the first issue of the series.
Ambras Castle is a unique Austrian landmark. Built on the site of a 10th century castle, this well-maintained Renaissance-era structure was once the home of Archduke Ferdinand II (1529-1595), and is today one of the most popular visitor attractions of the picturesque city of Innsbruck.
Composition: 0.925 fine silver | Weight: 17.3 grams | Size: 32 mm
Designer: Andreas Zanaschka
A scene depicting Ambras Castle. The denomination, date, and SCHLOSS AMBRAS in exergue. REPUBLIK ÖSTERREICH arches around the top rim of the coin. Designer initials AZ appear to the left of the building.
Designer: Herbert Wähner
Three musicians in traditional costume play horns inside of the palace’s Spanish Hall. Designer’s name H. WÄHNER appears on the left near the rim.