Perhaps we will never know the true maker. A very interesting action but not like the SuperBritte I use to have. It just looks much less refined in the lines and it looks very stout to my eye. I suspect a Germanic origin. No proof makes me think a prototype or a personal gun for the inventor. Perhaps he ran out of time or money before the project was done. Or the SuperBritte came out at the same time and took the market away. Two major wars and a World wide depression had to kill many dreams and projects. One more time where we wish these old guns could talk and give us their life story.