Numismatic Puzzle: Poseidon of Poseidonia

The piece of today’s puzzle comes from Künkers upcoming auction 416:

Poseidonia / Lucania. Stater, 530-500. From the Charles Gillet Collection, Bank Leu auction 77 (2000), 51. From the Dr. Eike Druckrey Collection. Very fine +. From Künker auction 416 (2024), lot 1015. Estimate: 7,500 euros

Have fun with the puzzle!