I got a gravity knife about 25 years that was brought back with a expertly hand made brown leather case (very well worn and molded to the knife from age/wear) that was very similar in design to the one pictured.
It had no means to be attached on a belt and the flap had a slit for the bale to protrude for a laynard to be worn in conjunction with the case.
I sold the knife and case to a dealer about 15 years ago so it is probably in a "big" collection today.
