NN (Herczawy) is a place, that before the Treaty of Saint-Germain belonged to Austro-Hungary and was situated in the administrative region Teschen/Cieszyn,Český Těšín.
NN (Herczawy) was formerly part of the German Empire. In the German Empire, the place was called Hertschawa. The place is now called Hrčava and belongs to Czech Republic.