Seleukid - Antiochus - Item D ID Complete

Likely Seleukid. The reverse is iconic: Apollo seated left, on an omphalos, holding an arrow. To the right on the reverse you can read ΒΑΣΙΛΕΩΣ (king), and on the left can be seen ΑΝΤΙΟΧΟΥ (Antiochos). However, there were several king of that name who issued similar-looking coins with this reverse iconography from the third century BC through the second century BC. The monogram or legend line to the very left would help pin it down, but it's hard to see on this coin. The obverse is completely gone too, it seems.