One of the four helmet plate patrices from Björnhovda, Torslunda parish, Algutsrum hunderd, <a href="https://en.wikipedia.org/wiki/M%C3%B6rbyl%C3%A5nga_Municipality" class="extiw" title="en:Mörbylånga Municipality">Mörbylånga municipality</a>, <a href="https://en.wikipedia.org/wiki/%C3%96land" class="extiw" title="en:Öland">Öland</a>, Kalmar county, Sweden.
Oscar Montelius (1843-1921)
Oscar Montelius, <i>Om lifvet i Sverige under hednatiden</i> (1873)