Hmmmm - not quite sure how to interpret that because by most definitions the earliest American coins were issued in 1792. But I'm going to assume that you mean what we commonly call Colonial coins. There is another way it could be interpreted though for the first coins struck in the Americas were struck in what is now Mexico City in 1536. So Spanish colonial coins can rightly be called earlier American as well.
Sorry, I'll clarify! Some may consider the earliest US issues to have been minted in 1792, if you disregard the Fugios, but there were many American coins minted before 1792. Some actually minted in America would include the Massachusetts silver, Higley Coppers, Chalmers silver as well as the various state coinages and the Spanish american mint coins [ which for some reason I haven't started collecting yet]. There were also many coins specifically made for the American colonies such as the Rosa Americana coins, Virginia Halfpennies, and French colonial coins beginning in 1640 or so. America existed long before the US did and so did it's coinage history. Since my main interest is pre US up through the earliest US mint issues, early american seems to fit well.
http://youtu.be/urvRrtMfSz8[video=youtube_share;urvRrtMfSz8]http://youtu.be/urvRrtMfSz8[/video] I wish I was this dude... hes the man.. from orbit