Athens (Attica), Tetradrachm 455 - 449 BC.
Each at ca. 24mm/17.3gm!
OBV: Head of Athena r. wearing crested helmet with olive-leaves and floral scroll.
REV: Owl standing right hd. facing, ΑΘΕ, οlive-twig and crescent, all within incuse square.
Lovely modern Fine Silver replica of this famous coin.
Similar authentic issues are valued at $1,000 or more.