Kingdom of Thrace, AV Stater (323-281 BC.) LYSIMACHOS, posthumous issue Alexander III the Great, Byzantion, c. (250-230), VF. Ex Baldwins/Spinks purchase

Ex Baldwins. Kingdom of Thrace, Lysimachos (323-281 BC), AV Stater, posthumous issue, Byzantion, c. 250-230, head of the deified Alexander right with horn of Ammon, rev.  
BASILEOS LYSIMAXOY Athena Nikephoros enthroned left, lion's head in outer left field, trident in exergue, 8.52g (Marinescu, Lysimachi, Group III, Issue 47, no. 122 (pl. 11, O47/R116); HGC 3.2, 1492; SNG Copenhagen 1086), slighly off-centre strike, but well-preservered portraiture despite some gouges to edge of flan, near good very fine. 

Purchase invoice available with this coin from a reputable dealer (Baldwins) 

Byzantium as it was then known was ruled by Alexander III the Great, King of Macedonia, he was undoubtedly one of the greatest military leaders of all time - by 30 years old he had successfully established one of the largest empires in history, stretching from Greece to India. Alexandria in Egypt still bares his name to this day.

Byzantine is the Greek name for Roman Byzantium or Byzantium (Constantinople after 330 then Istanbul since 1453). At the entrance to the Bosporus and capital of Thrace, Byzantine recognized the suzerainty of Alexander the Great, King of Macedonia, but then regained its independence. In 279 BC, a Gallic expedition is established in the vicinity of Byzantium and reduces the inhabitants to the last extremities, forced to buy back their lands in exchange for 10,000 gold coins and an annual tribute. To finance this ransom, the Byzantines then established a right of navigation on the Bosporus