Hollow edged, thick-butted greenstone axe from Hallsberg parish, Närke. Hollow edged axes primarily appears within the Battle Axe Culture of the Middle Neolithic, c:a 2700-2300 BC. They were probably used for wood-working.
http://historiska.se/upptack-historien/object/1227470
3D scanning
Xenter 3D-tekniker Midori Åstrand