„Per pale Or a upright axe azure and azure a flag Or charged with a fess chequy gules and Argent of three.“
The arms were officially granted on November 30, 1936. The axe in the arms is derived from a seal from 1411 from a judge of the court of Rhynern. The banner is the banner of the Counts of the Mark, to which the area historically belonged.
This image is taken from www.ngw.nl – Heraldry of the World –  an international civic heraldry site by Ralf Hartemink. http://www.ngw.nl/int/dld/amter/rhynern.htm
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