The symbol made of the two interlocking letters I and S stands for “Isen-Schmitt”, the old Eisenschmitt foundry mark from the 16th century. The tinctures gules and argent (red and silver) are the Malbergs’, under whose lordship Eisenschmitt lay until feudal times came to an end. The horizontal zigzag stripe (“fess dancetty”) on the dexter (armsbearer's right, viewer's left) side is the sign of the old County of Manderscheid and a reference to the village's former allegiance thereto. On the sinister (armsbearer's left, viewer's right) side are a hammer and tongs, symbols of the iron industry that lasted centuries, and from which the municipality also got its name.