Watch List notes:

Greek Italy. Southern Apulia, Sidion. AE 15 mm. c. 300-275 BC. Obv. Laureate head of Zeus right. Rev. [ΣΙ]ΔΙΝΩΝ. Herakles standing right, leaning on club set on rock. HN Italy 822; BMC 1-2. AE. 2.31 g. 15.00 mm. RRR. Extremely rare and in good condition for issue. Dark green patina. About VF. The only coin type issued by this city. See: 'Libero Mangieri G.: Le monete di Sidion e la circolazione monetaria nel periodo classico-ellenistico a Gravina in Puglia e ad Altamura (BA)' in RIN 2001, CII, pp. 49-87.