Tetradrachm - Philip I Philadelphos

Philip I Philadelphos came to power amid the accelerating collapse of Seleucid authority, ruling a kingdom that by the late 80s BC had been stripped to little more than northern Syria. His coinage was produced primarily at Antioch and continued well past the point where meaningful political control existed — issues kept circulating and were minted largely out of institutional momentum rather than imperial ambition. The dynasty ended formally when Tigranes of Armenia absorbed the remaining Seleucid territories around 83 BC, yet Philip's tetradrachms continued to appear, a numismatic anomaly that still prompts debate over precise mint chronologies.