JohnZ I am no specialized HJknife collector but as stated, I nowhere (in real or in the net) have seen this certain trademark on a HJknife. I am also wondering because the knife has recognizable large checkering of the grip plates compared especially to other early manufacturers which had extremely fine checkering at these early times. BTW this PACK has also an early "anodized" (blued) scabbard.
Do you know more about it, have you ever seen this certain mark before?
Regards,

wotan, gd.c-b#105

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