Acsearch is an archive of coins sold in
auctions, so it definitely contains
fakes but the
Knidos coins found there look nothing like this. This is modern
Bulgarian in
style, everything about it is modern, stlye
fabric and surfaces. Yours is a little more worn, artificially. Some
Bulgarian fakes can look more convincing with
fake wear but this one is not quite there yet. It also doesn't
help that it doesn't copy a known coin. The other coin may or may not sell but if it does, it won't become any more genuine.
In the last few years, thousands of new fantasy
fakes have come from
Bulgaria, they don't even try to make them convincing, since they can make them so cheaply, they don't need to sell for much. Some are modeled after existing coins, some are not. This may not even have been intended to be a coin of
Knidos (the existing
type with grape
reverse isn't very common).