Jerry,
I ran across a guy performing at an assisted living center a couple years ago that had a similar hard case. His was custom made locally and cost him a bundle--somewhere around $500 at the time. And, the case was quite heavy, tipping the scales at about 25 pounds. It was a hard case with a fabric cover made from heavy, black canvas. The hinges on the back were stainless with slide pins that locked when the case was closed. The front latches were something like stainless suitcase latches. I had a couple heavy-duty strap handles that were padded and held together with Velcro. The guy that made the case was from someplace in upstate New York if I recall. At $500 and at that weight I really wasn't interested in having one made. Neat concept, but very expensive and very heavy.
Good luck on your search,
Gary
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)