Watch List notes:

Sicily, Gela, AR Tetradrachm, 490-480BC, Naked horseman with spear wearing conical[?] helmet, galloping right, rev. CELAS below Man-headed bull, 'swimming' right, all within incuse circle, 8h, (Sear 713, Jenkins 99), obverse flattened with considerable contact-marking, reverse imposingly struck, with pleasant lustre throughout, fine to very fine.

Estimate: £180 - £200