Wrong attribution or something missing?

Why is this coin catalogued as a counterfeit?

Which criteria were used to classify it as such? Is there any historical explanation or could this be an incorrect catalog entry?

There are dozens of variations on Zeno, how can we spot which one is counterfeit and which one is not?

https://www.zeno.ru/showgallery.php?cat=3362

I still don't know why we list fakes as their own catalog pages. If they are very similar put them under the relevant catalog entries in the list of examples with the fake box ticked. There diameter, weight etc can be documented and other differences can be put in the comments of the example page.