KINGS OF THRACE. Lysimachos, 305-281 BC. Tetradrachm (Silver, 30 mm, 16.66 g, 1 h), Pergamon, circa 287/286-282. Diademed head of Alexander the Great to right with horn of Ammon over his ear; below neck, K. Rev. ΒΑΣΙΛΕΩΣ - ΛΥΣΙΜΑΧΟΥ Athena seated left, holding Nike, crowning the king's name, in her right hand and leaning with her left arm on shield decorated with lion's head; behind, transverse spear; in outer left field, herm to left; in inner left field, archaic xoanon; in exergue, monogram. Müller 294 var. (crescent not herm). Thompson 220 var. (crescent not herm). Beautifully toned and of exceptionally fine style, a splendid piece. Very light marks, otherwise, extremely fine.
From the Argyros Collection, ex Numismatica Ars Classica 100, 29 May 2017, 128.
The unusual addition of a K below the head of Alexander probably is the signature of an artist who was justly proud of his work.