For RAD leader hewers PACK is a very rare and desirable manufacturer. What I can see, the makermark conforms to that within my personal files. Overall the hewer does look nice and original and details match with known originals. The only thing I am not used to are, as said, the relatively wide open scabbard hanger-loops. Also as said this could come from wearing, who knows.
Regards,

wotan, gd.c-b#105

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