  Polish Coin. 
This extremely beautiful, extremely shiny silver coin was issued by the Polish government to commemorate the 100th anniversary of the discovery, by Madam Curie and her husband, of radium and polonium.  Poland...Polonium, get it?  In terms of technical data, this has got to be one of the most informative coins ever. 
Source: eBay seller arturkr 
Contributor: Theodore Gray 
Acquired: 20 June, 2003 
Price: $27 
Size: 1.5" 
Purity: 99.9% 
Sample Group: Coins
 |  
  |  
 |  
  |