Akarnania, Stratos: “Not found in the major references”… I wonder why?

The U.S. auction house Gemini LCC listed this coin on January 2013, pointing out it was “not found in the major references“.

In the commentary they even stated: “The coinage of Stratos has not yet been carefully studied. This coin appears to add something new to the record, an issue supplementing the output of Corinthian colonies in Acarnania and Illyria that took part in the oversea grain trade between Sicily and the mother-city Corinth“.

In fact the coin was a fantasy modern fake, combining the Sigma symbol