Thanks for viewing. 

Up for sale is a 4 coin lot of the very collectible Niobium/silver 25 Euro series from the Austrian Mint.  The 4 coins pictured are the 4 coins you will receive.  They are as follows:
2011 Robotik
2012 Bionik
2013 Tunnelbau
2014 Evolution

Each coin comes in its box and with a certificate of authenticity. 

If you have any questions or would like more images, please feel free to ask.