::::: "The triskeles, and ciphers similar to it, were popular numismatic elements in ancient times, for example used on the coins of Sicily. Unlike the meaning of the wrestlers and slinger, the exact significance of the triskeles in this context is known: it was the Aspendos city emblem." ::::::
::::: The overall form and orientation of the feet seems like this is a reference to Ancient Greece (Aspendos) ::::::
:::::: This might be the hallmark of a silversmith from Greece? ::::::
::::: The most ancient coins have the same foot orientation as the silver hallmark in question:
::::: My best guess is that the silver hallmark is referencing Ancient Greek coinage circa 465-430 B.C. ::::::
::::::: It is the "running right" triskeles ::::::
::::: Late 20th century Turkish silver can have a maker's mark of 2 letters and a fineness number (like 900) ::::::
:::::: The "running right" 3-legged-symbol is originally found in Aspendos, it is found on the silver coins of Ancient Greece, so that is what leads me to think about Greece first and foremost, but since the city of Aspendos is now in Turkey, I was considering Turkey as well. ::::::
:::::: If this is European, I can't figure out which country it might have come from. ::::::