.: Art Deco Pocket Clothes Brush, D.R.G.M. :.

D.R.G.M. stands for Deutsches Reichsgebrauchsmuster, meaning that the design or function of an item was officially registered inside all of the Germany states and not only locally registered as it was the case before the introduction of centralized registration. D.R.G.M. registration was introduced and were first issued starting in 1891.