This is a ~2040 year old, one denarius silver coin issued by the Roman Empire.  The portrait depicts Caesar Augustus (real name: Gaius Octavian), the first emperor of the ancient Roman Empire - he ruled from 27 B.C. to 14 A.D.
<p>This coin was produced at the Caesaraugusta Mint in Spain (= modern day city of Zaragoza) in 19 to 18 B.C.  The flip side depicts a comet that appeared in the year 44 B.C.  The pit on the cheek is a "banker's mark", which was made to test the legitimacy and solidity of the coin (fakes were made in ancient times).
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<hr><p>Identification: Augustus 37B of "Roman Imperial Coinage, Volume I", Second Edition
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<hr><p>See info. at:
en.wikipedia.org/wiki/Augustus
and
en.wikipedia.org/wiki/Denarius
and
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en.wikipedia.org/wiki/Caesar%27s_Comet
James St. John
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