Watch List notes:

Sicily, Agrigentum. Diobol circa 409-406, AV 1.34 g. AKPA Eagle standing l. on rock devouring serpent. On rock, two pellets. Rev. Crab; below, ΣIΛA / NOΣ partially retrograde. SNG ANS 998 (these dies). Gulbenkian 171 (this obverse die).
Rare and in exceptional state of preservation, possibly the finest specimen known.
Perfectly struck and centred on a full flan and good extremely fine

Ex Sotheby's sale 21-22 June 1990, Hunt part II, 221 and DNW A10, 2011, 1001 sales. From the S. Weintraub collection.