This coin was minted by Herod II, also known as Herod Archelaus from 4 BC - 5AD.  This is a half-prutah or lepton.   Herod Archelaus was the Herod mentioned in the Christmas story about when Jesus' parents returned from Egypt that they moved to Nazareth upon their return from Egypt in Matthew 2:21-23.      The coin shows a crested helmet with cheek straps and a bunch of grapes on a vine with small leaf on reverse.