Luftwaffe Belt Buckle (Koppelschloß). Originally the EM/NCO’s buckles were produced with a silver finish until a blue/grey version was introduced around mid-1940, and a tropical olive drab version was introduced in late 1940. The colored finish was determined by regulations depending on what form of uniform it was to be worn with. This is a nice 2-piece zinc construction parade style box buckle with a pebbled background, the separate frontplate is attached with four prongs. The buckle is not visible maker marked. Nice original Luftwaffe parade style buckle in very good condition!