Watch List notes:

THRACE, Byzantion. Circa 90-80 BC. AR Tetradrachm (31.5mm, 16.12 g, 11h). In the name and types of Lysimachos. Diademed head of the deified Alexander right, with horn of Ammon / Athena Nikephoros seated left, left arm resting on shield, transverse spear in background; monogram to inner left, BY below throne, ornate trident in exergue. Callataÿ Group 3, – (unlisted monogram); Müller –; HGC 3, 1406. Iridescent tone, trace deposits, minor porosity. Near EF. Very rare.