Theme of acorns and oak twigs found in the royal coats of arms and chivalry from Middle Ages. Today oaks are representing many european city shields.
Today shields of some towns in Poland.
oak leaves on the polish coin from 1923.
Today shields of some places in Germany.
Vizcaya Symbol of one of the Basque province , Spain.
coat of arms of Estonia.
coat of arms of Belgrad, capital of Serbia.