Coin Wars contains images licensed under Creative Commons and public domain licenses. Attributions are listed below. Special thanks to everyone who makes their work available under CC and public domain licenses.
Tiziano Garuti [public domain]
Mschlindwein [CC-BY-SA 3.0] via Wikimedia Commons
Microsoft Sweden [CC-BY 2.0] via Flickr
Finbar Bogerd [CC BY]
walknboston [CC BY 2.0]