Europa
Europa is the old name of European Union. ECU (European Currency Unit) has been replaced by Euro. A large number of coins have been produced to commemorate special historical events and personalities of European Union. Most of these coins were minted from 1972 to 1992 and are mentioned in Bruce's 4th edition of "Unusual Coins of the World" by Krause publication in 2004. This book features a great variety of Europa coins in copper, silver and gold including patterns.
I purchased my Europa 1 Thaler 1972 Paul - Henri Spaak .925Ag coin from Steele Huang (Similar Coin). This coin is also listed in the above mentioned book as number X205.
 

 
Micro-Nations
 
Chiefa Coins