Poland has a rich selection of Gold and Silver commemorative coins. In the year 2007 coins were launched in the series: "Animals of the World", "Polish Travelers and Explorers", "History of the Polish Zloty", "Monuments of Material Culture in Poland", "History of the Polish Cavalry", "Polish Painters of the Turn of 19th and 20th Centuries" and various occasional coins.
References
Commemorative coins of Poland: 2007 Wikipedia(Text) CC BY-SA