Hello, unfortunately I am not very experienced with these certain hangers. But the hardware, the kind of how the hanger is manufactured in details, the rivets, all looks ok to me at least what I can see from the pics.
As said, I am no specialist for these hangers (especially the stamping) but doe to the facts I have mentioned I personally would tend to think it is a period one.
Regards,

wotan, gd.c-b#105

"Never look for sqare eggs" as a late owner of an original FHH-dagger used to say.