Hi Fazer,
Looks like you've got a holster that was modified for the Norwegian web belt hanger after WW2.
The loops were cut off and a leather strap that held the metal web belt hanger was riveted in place with 4 rivets.
Many of those holsters were restored when they came on the market in the late 1980s and early 1990s. The hanger was removed, the holes left or just plugged and new loops were sewn on.