Celtic Woad Grinder Set

Iron Age Celtic Woad Grinder set in exceptional form and extemely rare (grinder and pestle complete).  This is the tool the Celts used to grind the woad plant and apply the blue dye to their skin.  Both parts would have been worn/attached to the person.  Circular 'ring' missing from pestle.  1st century BC - !st century AD.  Ship opt 1