Those are beautiful coins with significant images. The reverse of the coins are portraits of Augustus’ two grandchildren and heirs who would later die (Gaius and Lucius). The lituus was a crooked wand and is used as a symbol of the augurs who used the lituus to mark out the sky for divination by the flight of birds. The simpulum was a vessel or ladle with a long handle that was used at sacrifices to make libations.