Greek Coinages, ATTICA, Athens, Tetradrachm, late standardised type, c. 440-405, helmeted head of Athena right, rev. owl standing right, olive sprig to left, αθε to right, all within incuse square, 17.16g (Kroll 8; Kroll Empire, fig. 2.8; BMC, Group β, 46ff; Sear 2526). Test mark on reverse, otherwise very fine, nicely centred £200-£260