Most coins from ancient Akragas had a depiction of an eagle on the obverse and a crab on the reverse.
The eagle was one of the symbols of Agrigento, the bird of Zeus, the greatest power; while the crab was likely connected with the name Akragas, which sounds similar to the word karkinos, Greek for crab.
Another type of coin found in Agrigento had a quadriga (chariot), another symbol of the horse-breeding city.