I don't recognize it. It might be a custom built job. Usually when the gun makes do a case it has lots of other goodies in the case with the gun. i.e. cleaning rods, bore brush, screw drivers, and what not. This case doesn't show signs of ever having had that stuff in there with the gun. It is a beautiful case, and seems to be well made. Custom jobs like that can run into the hundreds of dollar.
It looks like you have some interesting leather gear there. Check out the names on the holsters. I recently found that I had some holsters that were worth as much as the guns were. The holster collectors usually hang out on eBay. Plus what they are selling for will give you an idea what yours are worth.