The arms were granted in the 13th century. It is not quite known when Orsoy received city rights, but it is mentioned as a city in 1280. The arms are based on the oldest seal of Orsoy, which also dates from the end of the 13th century. It shows three horse-heads over a city wall. The horse-heads may be canting (Ors = Pferd/Ross or horse) in old-German. Smaller seals only show a single horse-head.
Stadt Orsoy modified and added by <a href="//commons.wikimedia.org/wiki/User:Juergenk59" class="mw-redirect" title="User:Juergenk59">Jürgen Krause</a>
Stadt Orsoy <a rel="nofollow" class="external free" href="http://www.ngw.nl/int/dld/o/orsoy.htm">http://www.ngw.nl/int/dld/o/orsoy.htm</a>