As noted above, based on the new photos, I agree the above coin is not authentic. In fact, I found a site that sells these things. Screen shot below (first photo). The site says that the coin is not solid precious metal, but is silver
plated. It also says the coins are made for "educational purposes."
I have some minor quibbles with terminology in the discussion just as a point of interest.
Note- I am not talking of a concave fabric but a double incuse fabric. They are totally different things.
Agree that an
incuse design element and concavity can be two completely different things. Not sure you can call the entire
side of a coin
incuse. Webster's dictionary defines "
incuse" as "Cut or stamped in, or hollowed out by engraving." Coins have
incuse design elements. For example, hemidrachms of Rhodes have a rose within an
incuse square. I wouldn't call the entire
fabric incuse, just the square.
In addition, there are some coins that have
incuse elements on both sides. Not sure what is meant by "
incuse fabric."
For example,
Italy.
Bruttium, Kaulonia. AR
incuse Stater, circa 525-500 BC (second photo below).
That coin has an
incuse circle on the
obverse with a figure within. It has an
incuse figure on the
reverse. Double
incuse fabric? Not sure what that means, but certainly a coin with
incuse elements on both sides.
As to concave/incuse, there's a coin of
Sicily with a crab in a concave
incuse circle. (Third photo below).
I'm not really even sure that the coin at the beginning of this
thread is really intended to depict an
incuse element. I think it's just some guys stamping pictures from
ancient coins into metal to sell as souvenirs. (You can get one for about 16 bucks...).