This is an original German WW2 Officer's leather great coat. Dark grey.  These coats were used by Officer's in the German Wehrmacht. 

It is a heavy grade leather with lining.  Belt buckle is ASTOR Mod. Gloria. Zippers are marked ZIPP with PRYM snaps

Size 42/44 chest. 

There were at least 13 variations of the leather greatcoat used by the Wehrmacht, not counting their counterparts used by Luftwaffe and Kriegsmarine. Officers and officials with ranking of officers were entitled to wear these coats as optional items and were given the choice to have them customized and tailor made as was the case with their uniforms.