But what about coinage in Antiquity. Do they bother about environment 2000 years ago ? It is important to remember that the extraction of the ore and the refining of the metal are extremely expensive operations in materials and human lives having an action on the environment. It is estimated that each ton of silver produced required the extraction of 1,500 tons of ore, the combustion of 2,000 tons of charcoal and therefore the felling of 10,000 tons of wood. It also costed the lives of several hundred people. Fortunately some rulers in the past were aware of pollution and environmental issues. For example the emperor Carausius who reused old coins to struck his own ! That’s what we call recycling. Carausius Antoninianus Overstruck on a Gallienus(?) coin So just for fun on this quiet Sunday, please show me your examples of “recycled” coins or rulers who were eco-friendly !