Coats of arms of historical province of <a href="https://en.wikipedia.org/wiki/Ostrobothnia_(historical_province)" class="extiw" title="en:Ostrobothnia (historical province)">Ostrobothnia</a>
Ahti Hammar, 1963
2007-09-10
<a rel="nofollow" class="external text" href="http://digi.narc.fi/digi/view.ka?kuid=1742351&amp;lang=fi_FI">Finnish National Archives</a>