Museum quality Etruscan bronze mirror with Poseidon riding a Sea Horse, circa 400 BC
Height: 11 inches = 28 cm;
Diameter: 5.5 inches = 14 cm;
Weight: 15 oz. = 420 g;
Age: circa 4th Century B.C.

Mirror surface is slightly convex, disk-shaped with a flange flaring out at the bottom,
The reverse is incised with Poseidon riding a Sea Horse.
The handle is shaped as a head of the strange animal: crocodile with long ears;
Provenance: from the collection of Chinese professor from New Jersey, USA.
Etruscan civilization is the modern name given to a href="http://en.wikipedia.org/wiki/Ancient_peoples_of_Italy" title="Ancient peoples of Italy">civilization of ancient Italy in the area corresponding roughly to href="http://en.wikipedia.org/wiki/Tuscany" title="Tuscany">Tuscany , western Umbria , and northern Lazio . The ancient Romans called its creators the Tusci or Etrusci .[1] Their Roman name is the origin of the terms Tuscany , which refers to their heartland, and href="http://en.wikipedia.org/wiki/Etruria" title="Etruria">Etruria , which can refer to their wider region.
In title="Attic Greek">Attic Greek , the Etruscans were known as ( href="http://en.wikipedia.org/wiki/Tyrrhenoi" title="Tyrrhenoi">Tyrrhnoi) , earlier Tyrsenoi , from which the Romans derived the names Tyrrhni (Etruscans), Tyrrhnia (Etruria), and Mare Tyrrhnum ( title="Tyrrhenian Sea">Tyrrhenian Sea ).[2] The Etruscans called themselves Rasenna, which was href="http://en.wikipedia.org/wiki/Syncope_%28phonetics%29" title="Syncope (phonetics)">syncopated to Rasna or Rana ,[3] earlier T'rasena whence comes the Roman and Greek names, prompting some to associate them with the Egyptian Teresh (Sea Peoples). The word may also be related to the Hittite Taruisa .[4]
As distinguished by its href="http://en.wikipedia.org/wiki/Etruscan_language" title="Etruscan language">unique language , this civilization endured from the time of the earliest Etruscan inscriptions (c. 700 BC)[5] until its assimilation into the href="http://en.wikipedia.org/wiki/Roman_Republic" title="Roman Republic">Roman Republic in the late title="Roman-Etruscan Wars">4th century BC .[5] At its maximum extent, during the foundational period of Rome and the title="Roman kingdom">Roman kingdom , it flourished in three confederacies of cities: of Etruria, of the href="http://en.wikipedia.org/wiki/Po_valley" title="Po valley">Po valley with the eastern Alps , and of Latium and Campania .[6]
Culture that is identifiably Etruscan developed in Italy after about 800 BC approximately over the range of the preceding href="http://en.wikipedia.org/wiki/Iron_Age" title="Iron Age">Iron Age title="Villanovan culture">Villanovan culture . The latter gave way in the 7th century to a culture that was influenced by href="http://en.wikipedia.org/wiki/Hellenic_civilization" title="Hellenic civilization">Hellenic title="Magna Graecia">Magna Graecian and Phonecian contacts. After 500 BC, the political destiny of Italy passed out of Etruscan hands.[7] The latest mtDNA study (2013) shows that Etruscans appear to fall very close to a Neolithic population from Central Europe and to other Tuscan populations.[8]
Poseidon (/ p s a d n / ; Greek : , pronounced [poseedn] ) is one of the twelve href="http://en.wikipedia.org/wiki/Twelve_Olympians" title="Twelve Olympians">Olympian deities of the pantheon in title="Greek mythology">Greek mythology . His main domain is the ocean , and he is called the "God of the Sea". Additionally, he is referred to as "Earth-Shaker"[1] due to his role in causing href="http://en.wikipedia.org/wiki/Earthquake" title="Earthquake">earthquakes , and has been called the "tamer of horses".[2] He is usually depicted as an older male with curly hair and beard.
The name of the sea-god Nethuns in Etruscan was adopted in Latin for href="http://en.wikipedia.org/wiki/Neptune_%28mythology%29" title="Neptune (mythology)">Neptune in title="Roman mythology">Roman mythology ; both were sea gods analogous to Poseidon. href="http://en.wikipedia.org/wiki/Linear_B" title="Linear B">Linear B tablets show that Poseidon was venerated at href="http://en.wikipedia.org/wiki/Pylos" title="Pylos">Pylos and Thebes in pre-Olympian href="http://en.wikipedia.org/wiki/Bronze_Age_Greece" title="Bronze Age Greece">Bronze Age Greece as a chief deity, but he was integrated into the href="http://en.wikipedia.org/wiki/Olympian_gods" title="Olympian gods">Olympian gods as the brother of Zeus and Hades .[2] According to some folklore, he was saved by his mother Rhea, who concealed him among a flock of lambs and pretended to have given birth to a colt, which was devoured by Cronos.
There is a title="Homeric hymn">Homeric hymn to Poseidon, who was the protector of many Hellenic cities, although he lost the contest for Athens to Athena . According to the references from href="http://en.wikipedia.org/wiki/Plato" title="Plato">Plato in his dialogues Timaeus and Critias , the island of Atlantis was the chosen domain of Poseidon.