Watch List notes:

Sicily, Akragas. Civic issue. Ca. 450-440 B.C. AE cast trias or tetronkion (18 mm, 16.72 g). Eagle standing left / crab. Westermark, Fifth, pl. I, 1, Coinage, 525; HGC 2, 126; CNS 1; SNG ANS 1015-1017. Near VF for type, mottled green patina with minor deposits.

the base of these usually has 4 pellets - unusual to be blank