Watch List notes:

Sicily, Tetradrachm, Akragas, c. 464-450 BC; AR (g 17,07; mm 22; h 10); AKPAC-ANTOΣ (retr.), eagle standing l., with closed wings, Rv. Crab within incuse square. SNG Copenhagen -; SNG ANS 976-978.
Rare, cabinet tone, good very fine.