How do I know if this is the correct sheath

[LKSKNIVES]

My dad has a few Marbles knives match safes and compasses. I will post a picture of a Jet Pilot Knife and a Sheath is there a way to tell if it’s the correct sheath?

[eveled]

Those both look a little fancier than the run of the mill JPK knives and sheaths.

They look like they match.

[LKSKNIVES]

Those are out of my dad’s collection from what I have read is there a two versions of the Marbles JPK. I thought they said the commercial version has the bright blade. I Don’t know by any means. There are a couple of sheaths like that one and I have plenty of different knives like that just am not sure how to match them correctly.
Steve

[Gunsil]

I believe the scabbard is correct. You are also correct that it is is a commercial model, the military ones also had steel guards.