Watch List notes:

SICILY, Akragas. Circa 510-495 BC. AR Didrachm (22mm, 8.86 g, 8h). Sea eagle standing left; retrograde AKRAC-ANTOΣ (partially retrograde) around / Crab. Westermark, Coinage, Period I, Group I, – (O19/R18 [unlisted die combination]); HGC 2, 87; SNG ANS 913 (same rev. die); SNG Copenhagen 23 (same rev. die); McClean 2028 (same rev. die). Toned, some marks under tone. Good VF. From the earliest issue of coinage at Akragas, and only the second coin known from this obverse die; Westermark records a single example, from a 1923 Sambon sale.

From the Weise Collection. Ex G. Hirsch 267 (5 May 2010), lot 53; Numismatica Ars Classica 46 (2 April 2008), lot 177; LHS 95 (25 October 2005), lot 489.

Westermark's reverse die R18 is recorded with her obverses O18 and O20, so its pairing here with O19 is not surprising.