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It may be thought of as a symbol of rebirth. This snake features strongly in Aztec religion
"Hydra"
双頭の蛇 /sou tou no he bi/ means 'two-headed serpent' in Japanese.
Hercules the demigod and warrior
A serpent represents temptation. This is a representation that comes from the biblical story of the Garden of Eden, with the serpent tempting Eve.
Hydra was a many headed serpent in Greek mythology
Some Toltec symbols include the feathered serpent Quetzalcoatl, the jaguar as a symbol of power and strength, and the double-headed serpent as a representation of duality. Other symbols in Toltec art and culture include the sun, the moon, and various geometric designs.
The Yellow-headed Amazon (or Double Yellow-headed Parrot) comes from Mexico and Northern Central America.
See related links for a picture of a cursor double-headed arrow.
On the drawing toolbar, go to autoshape->connectors, and the double arrow is in there.
1} Double headed eagle is of the Prussian orthodox christian church , representing a time where once Christendom was divided in West & East , after much persecution , this emblem found itself in Russia. 2}The fish , is the secret sign of Christians 3}And the serpent is the EVIL it battles & conquers !
If your asking about 1963 Double Headed Lincoln cents? No authentic mint errors exist.