This is an Hellenic theme the King of Macedonia Filip II (ΦΙΛΙΠΠΟΣ Β') who was also the father of Alexander the Great, a 54mm figure by Art Girona. This is a quite old figure but with great detail and historically accurate especially in the shield. The armor and shield which were discovered inside a tomb in Vergina in modern Greece (it is believed that it is the ancient capital of Macedonia "Aiges") are still in great condition!
Have a happy new year...

theo