Period or not, I cannot imagine any german company proudly producing anything with the national symbol mirrored... At best I would call it a mishap, something that should have been destroyed and never left the factory!!!
And if it was me, ordering a nice sword to proudly wear on special occasions and parades, I would certainly be disgusted to receive a sword with the swas the wrong way, and would immediately return it to the representative of the company that I bought it from!!!!
