The hoard from Mammen appeared during gravel quarrying near the chamber-grave. It contained two fine harness bows for carriage horses. The harness bows are of wood, with fittings and decoration made from gilded bronze. The two pieces were part of the harness and were placed on the backs of the horses. Besides being decorative and indicating wealth, they functioned as a guide for the reins on wagon horses. At the same place several copper dishes and a model for making jewellery were found. In addition, the find included a fine wooden casket with gilded fittings, although the wood has not survived.