Febuary, of 1977 "American Rifleman" cover story by Roger Barlow. The gun Roger saw and wrote about was in the Museum at Liege, and was built there by Charles Levy, circa 1928.
Roger noted the serial number was 204, and surmised that few had been built.

The gun didn't appear to be sleeved jOe, so, you can go back to your cornflakes.

Best,
Ted