#2) Greek silver tetradrachm.
Attica, Athens, (ca. 454 - 404 B.C.)
SNG Cop 31; Kroll 8.
Obv: Bust of helmeted Athena. Rectangular counter mark on neck.
Rev: AΘE - Owl standing right with head facing, crescent moon and olive sprig behind, all within incuse square. Test cut.
26 mm, 15.2 g.


Probably the most important coin of the ancient Greek world, the Athenian "Owls" were valued for their purity and consistancy and were accepted as currency throughout the ancient world. 

Thanks for looking!