How to make a scabbard for a Kampilan?

[imas560]

So I'm almost ready to apply the hair tufts but I thought I'd better verify the kampilan.
I was working under the assumption that the kampilan is a recently made piece (recent as in made in the last 10 years). But I want to confirm first as I was thinking the scabbard is an addition that does not alter the item but the hair tufts affixed become part of the item. I have taken a few additional photos and I was hoping that someone could be able to quickly tell that the kampilan is a recently made item.
The dimes do not show the year, but I thought it could be quite easy to get hold of a couple of old coins.
The kampilan is approx 39 inches / 1 metre long.
Thanks everyone for your help.