Hitler-Jugend Belt Buckle (HJ Koppelschloß). The distinctive HJ belt buckle was introduced in 1933. The aluminum buckle is nicely maker marked with 'RZM M4/39' indicating prodcution by the company 'F.W. Assmann' from Lüdenscheid. This is a rarely seen variant with a crimped catch. Rare original buckle in good used condition!