My personal opinion is, and therefore a "vet buy" could be easily possible, that these ugly, undimensioned hybrides were somethink like the field day daggers, made especially for the occupying forces.
The blades are common "Waidpraxen" blades which were produced These and earlier times for this special hunting tool (see contemporary adds). When the real blades for RAD hewers did extinguish these Praxen-blades on store were used as they were about the same dimemnsions.
Keep in mind that these blades have a mm which NEVER was used on any other blade of KREBS, that the "Arbeit adelt" is on the wrong side of the blade and the blade carries the approvement of the RAD leadership which should have been mentioned in any regulation of the RAD which is not the case.
Regards,

wotan, gd.c-b#105

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