If you also mean the largest coin in circulation ever , then it has to be United Kingdom 2 Pence coin, 1797 . It was the legal tender then, but it is not now. It is 41 mm in diameter and weighs 56 g.
Which Is Heavier a Penny or a Dime?
James H. Sterling
Environmental Science & Climate Journalist
James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.
