Watch List notes:

PHOKIS, Federal Coinage. Circa 352-351 BC. Triobol or Hemidrachm (Silver, 14.5 mm, 2.62 g, 12 h), struck under the magistrate Phayllos. Facing bull's head. Rev. Φ - Ω Laureate head of Apollo to right; to left, lyre. BCD Lokris-Phokis 304-311. HGC 4, 104. Williams - (O263/R-). Toned. Light porosity, otherwise, very fine.
From the stock of an old Swiss dealer assembled mainly in the 1960s-1970s.