Unfortunately the smaller coin has been very unpopular and is rarely seen in common circulation. About the only place it is used is in vending machines. There are several series of the new coin. This is the reverse (tails) of the Presidential series. The obverse (heads) is the portrait of one of the presidents this being a 2011 coin with Ulysses S. Grant. The history of the American dollar is quite interesting and this is already too wordy. If you want to read all about it see Wikipedia.
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