Watch List notes:

SICILY, Akragas. Circa 495-485 BC. AR Didrachm (22.5mm, 8.65 g, 9h). Sea eagle standing left / Crab within incuse circle. Westermark, Coinage, Period I, Group II, 98 (O41/R60); HGC 2, –; Comiso 21 (same rev. die). Toned, edge split, minor die wear. VF. Attractive crab.

From the Baldwin Maull Collection, purchased from Münzen und Medaillen AG, 1957.