ATTICA, Athens. Circa 454-404 BC. AR Tetradrachm (23.5mm, 17.16 g, 8h). Head of Athena right, with frontal eye, wearing earring, necklace, and crested Attic helmet decorated with three olive leaves over visor and a spiral palmette on the bowl / Owl standing right, head facing; olive sprig and crescent to left, AΘE to right; all within incuse square. Kroll 8; HGC 4, 1597; SNG Copenhagen 31; SNG München 49; Dewing 1611–22; Gulbenkian 519–21. Lightly toned, with some iridescence around the devices, slight die wear. Superb EF.
From the William H. Birkinshaw Collection. Ex Stack's Bowers Galleries (8 January 2016), lot 30072 (hammer $3000).
This superb owl is almost certainly among the latest of the famous frontal-eye series, as the depiction of the eye here is verging on being in profile, as it appears on all the subsequent series of Athenian coinage.