Ah! Its a Scandinavian style sheath with a folded over and riveted (ugh, a no no) belt loop. You dont want that rivet to be exposed on the inside of the sheath, its better sewn.
That style of sheath is not for the beginner, you need someone who has some experience in the making of this style sheath. They are not inexpensive. The time involved in that style of sewing is incredible. I did a lot of this stuff back in my first years, but the time and effort make for an expensive, but very durable sheath. I dont do many of those due to the time and effort involved.
Anyone out there do them regularly? I can do it, but my time is neither cheap or expedient. The wait is long, and the fee is up there. I'm trying to get the wait down, but this is not my specialty.