The Lewis Chessmen, probably made in Norway, about AD 1150-1200. At this period, the Western Isles, where the chessmen were buried, were part of the Kingdom of Norway, not Scotland. It seems likely they were buried for safe keeping on route to be traded in Ireland.
Lewis Chessmen Berserker: according to Old Norse literature, berserkers were notorious as fighting uncontrollably in a trance like state. Notice how our Berserker has bulging staring eyes and angrily bites his shield ready for action!