Watch List notes:

Celts in Eastern Europe AR Tetradrachm. Imitating the types of Alexander III of Macedon. Circa 3rd – 2nd centuries BC. Head of Herakles to right, wearing lion skin headdress / Zeus Aëtophoros seated to left, holding sceptre; [...]ΕΞΛΝΔΡΟV to right, ΣИΕΛΩ[...] in exergue; no control. Unpublished in the standard references. 16.84g, 26mm, 8h.

Very Fine. Extremely Rare; apparently unpublished.

From the inventory of a UK dealer.