Soory to dissapoint you but it looks very modern and crude to me.
Doesn't appear to be gold, probably more a souvenir token
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It's going to be very difficult to sell what I'm guessing is a quite high cost item online in it's present uncertified raw state. I've got no idea what it is, or what it's supposed to be, not my kind of thing but I'm sure it's worth enough to make the trip around a few coin dealers and getting a basket of offers to choose from.
They will probably offer about 50% of it's market value, which will probably be about 1/3 of the catalog value but at least you won't have the cost of having it certified or the worry about if it's an original.
Don't accept the first offer, no matter how good it seems. A dealer has to factor in the likely "shelf time". While US gold will probably sell in a week he might have this sitting in his inventory for years. A dealer with a clientele to match the coin will give you a much better offer.
Non illegitimis carborundum est. Excellent advice for all coins.
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This coin looks to be greek to me. However it does not apear to be a real coin from what i can see, i think it is a fantasy coin, it is likely to me made for a ring by a jeweller. It may well be gold but i dont think it will be worth more than its gold content. This is my opinion and i may be wrong, also the coin is to round, no older hammered coins were ever that perfectly round.
Yer looks very similar think younhit the nail on the head, but i thinkit is still a reproduction for jewellery purposes if its made of gold as the details do not match.