Ancient Egypt, Pharaonic Kingdom- 4th c BC Athena owl silver tetradrachm #8185

  
Late 5th-mid 4th centuries BC. AR Tetradrachm (21.5mm, 16.51 g, 9h). Helmeted head of Athena right, with frontal eye / Owl standing right, head facing; olive spray and crescent to left; all within incuse square. Van Alfen, Mechanisms, Group III. 1 = Buttrey Type B. Lightly toned, test cuts, porous.