Ron -
It is a Clarence Moore, 100%. I never had any doubt whatsoever. It is typical of a WWII model 2 Moore.
Heiser construction is different than Moore as you know, and not just visuals like stone pouch flap. Totally different shape, stitching, rivets (most), etc.
I don't recall ever seeing a WWII model 2 in a Heiser sheath w/o rivets.
I don't have a photo of the back of this particular sheath, but this photo is of Moore that is of the same construction in the butterfly
Attachments
------