Watch List notes:

Ionia, Erythrai. Ca. 550-500 B.C. EL fourree hekte (9 mm, 2.26 g). Head of Herakles left, wearing lion skin / Quadripartite incuse square. cf. Kayhan 737-8; cf. SNG von Aulock 1942; Boston MFA 1806-7. VF. 

This coin appears to be a fourree