Watch List notes:

ISLANDS off THESSALY, Ikos. 3rd century BC. Æ Chalkous (14mm, 2.50 g, 6h). Wreathed head of Poseidon right / Trident head; dolphins flanking; all within concave circle. Cf. Rogers 558; BCD Thessaly II 796.2; HGC 6, 397. Dark green patina. VF. Extremely rare, the BCD piece was noted as the "second known" of this concave type.

From the AG Collection. Ex Classical Numismatic Group Electronic Auction 268 (16 November 2011), lot 79 (incorrectly attributed to an earlier issue).